Setting your climbing line from the ground is one of those skills that separates a confident tree climber from someone still figuring things out. I have spent months testing different throw line kits, throwing weights over branches in my backyard oaks and on job sites, and I can tell you that having the right kit makes a massive difference. The best throw line kits for tree climbers combine a slick, low-friction line with a well-built throw weight so you can place your line accurately on the first or second attempt.
A good throw line kit saves you time, keeps you off ladders, and lets you set your climbing line exactly where you need it before you ever leave the ground. Whether you are a professional arborist who throws lines every day or a weekend tree trimmer who needs reliable gear a few times a season, this guide covers eight kits I have put through real-world testing. We will look at line materials, throw weight options, and what actually matters when you are standing under a 60-foot oak trying to hit a specific crotch.
I picked these eight kits based on hands-on experience, verified customer feedback, and the specs that matter most: line slickness, tensile strength, weight durability, and overall value. From budget-friendly starter kits to professional-grade systems with multiple weights and organizers, there is something here for every climber and every budget.
Top 3 Picks for Best Throw Line Kits for Tree Climbers
Best Throw Line Kits for Tree Climbers in 2026
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FORESTER Dyneema 180ft Kit
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Notch Intermediate Throwline Kit
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FORESTER Polyester 166ft Kit
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XBEN 150ft Throw Line Kit
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Weaver Arborist 150ft Kit
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Aystkniet 150ft Memory-Free Kit
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FORESTER Professional 150ft Kit
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AOLEBA 166ft Polyester Kit
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1. FORESTER Dyneema Throw Line Kit – 180ft Pro Slick Line
FORESTER Arborist Throw Line Kit | 15oz Throw Weight & 180ft Throw Rope | Pro Slick 100% Dyneema Throw Line Rope | Arborist Equipment for Tree Climbing
2.2mm x 180ft Dyneema
15oz Throw Weight
Low Memory Design
Pros
- Extremely slick Dyneema line
- Lowest friction of any kit tested
- 180ft length handles tall trees
- Does not kink or tangle
Cons
- Limited customer reviews so far
- Higher price than polyester kits
When I first uncoiled the FORESTER Dyneema throw line, the difference was immediately obvious. This line practically glides through your fingers. The 2.2mm Dyneema construction gives it a fraction of the friction you get with standard polyester or polyethylene lines. In my tests throwing over branches at 50 and 60 feet, this line sailed through crotches and around bark with minimal drag, which means fewer stuck lines and faster resets.
The 180-foot length is a real advantage over the standard 150-foot kits. On taller trees, especially mature oaks and pines, those extra 30 feet give you the breathing room to work around multiple branch unions without running out of line. I found that the low-memory design means the line feeds out smoothly from a coil or cube without tangling mid-throw, which is one of the most frustrating things about cheaper throw lines.
The 15oz throw weight is solid and well-constructed with a nickel-plated ring. It throws true and has enough heft to pull the thin Dyneema line through tight crotches without bouncing off target. For arborists who throw lines all day, the combination of slick line and proper weight means less effort on every single throw.
My only hesitation is the limited number of reviews so far. With only 16 reviews on Amazon, this is a newer offering from FORESTER. That said, the 4.8-star rating and the Dyneema material quality speak for themselves. If you want the slickest line available and do not mind being an early adopter, this is the one to get.
Best Use Cases
This kit shines for professional arborists who need to set lines quickly and accurately in tall trees on a daily basis. The Dyneema line is ideal when you are working with dense canopy situations where friction is your biggest enemy. If you regularly climb trees over 50 feet and need reliable first-throw accuracy, the 180ft Dyneema kit delivers.
It is also a strong choice for anyone who has been frustrated by polyester or polyethylene lines getting stuck in bark or branch unions. The low-friction properties of Dyneema mean fewer retrieval attempts and less wasted time on the job. Recreational climbers tackling big trees will also appreciate the extra length and smooth handling.
Line Material and Longevity
Dyneema, also known as UHMWPE (Ultra High Molecular Weight Polyethylene), is one of the strongest fibers available for rope construction. It has a higher strength-to-weight ratio than steel. In practical terms, this means your throw line will resist abrasion, UV degradation, and general wear far better than standard polyester alternatives.
I have seen Dyneema lines last two to three seasons under heavy professional use, while polyester lines in the same conditions typically need replacing after one season. The trade-off is the higher upfront cost, but over time the durability actually makes it more economical. Just be aware that Dyneema has low melt point, so keep it away from friction heat during rapid lowering.
2. Notch Intermediate Throwline Kit – Professional 3-Weight System
Notch Intermediate Throwline Kit (32396)
Neon Plus 3mm x 200ft
3 Throw Weights: 10oz 12oz 14oz
Folding Cube Organizer
Pros
- Three weight sizes for different conditions
- 200ft line is longest tested
- Lifetime warranty
- Folding cube keeps gear organized
Cons
- Premium price point
- Heavier overall kit to carry
The Notch Intermediate Throwline Kit is the most complete package I tested. Instead of a single throw weight, you get three color-coded weights in 10oz, 12oz, and 14oz. This matters more than you might think. Different tree species, branch angles, and heights call for different weights, and having all three in your kit means you are prepared for any situation without making a separate trip to the truck.
The Neon Plus 3mm x 200-foot throwline is the longest line in this roundup, giving you unmatched reach for the tallest trees. In my field testing, the polypropylene construction has a springy body that resists tangling, and the bright neon pattern is easy to track against a green canopy. Notch built this line specifically for arborist use, and it shows in the handling characteristics.
What really sets this kit apart is the included Throwline Folding Cube. Organization sounds boring until you have spent ten minutes untangling a throw line that was shoved into a stuff sack. The folding cube feeds the line out cleanly and retracts it just as easily. For professionals who move between trees all day, this organizer saves serious time and frustration.
The lifetime warranty against defects in materials and workmanship tells you Notch stands behind this product. The 1000-denier Cordura construction on the weights and the welded rings are built for daily professional abuse. Yes, the price is higher than budget kits, but the three-weight system, longest line, organizer, and warranty make it a genuine value for working arborists.
Who Should Invest in This Kit
Working arborists who climb five or more trees per week will get the most value from this kit. The three-weight system pays for itself when you can grab the right weight for each tree instead of struggling with a one-size-fits-all approach. If you do tree removal, pruning, or canopy work professionally, this is the kind of gear that pays for itself in efficiency gains within the first week.
Serious recreational climbers who tackle a variety of tree species and heights will also benefit. The 200-foot line handles the tallest specimens, and the folding cube keeps your gear organized between trips. If you are building a professional-grade gear collection, this kit belongs in it.
Kit Components Breakdown
The Neon Plus throwline uses a polypropylene construction that balances slickness with durability. It is not as slick as Dyneema, but it handles well and resists abrasion from rough bark. The 3mm diameter is easy to grip and feeds through branch unions without excessive friction. The springy body means it returns to a straight shape after being coiled, which prevents the memory-related tangles that plague cheaper lines.
Each of the three Zero Throw Weights features welded rings and 1000-denier Cordura exteriors. The color-coded design means you can grab the right weight at a glance. The folding cube collapses flat for transport and pops open into a structured shape that holds your line neatly. Every component feels purpose-built for daily professional use.
3. FORESTER Arborist Throw Line Kit – 166ft Ultra Slick Rope
FORESTER Arborist Throw Line Kit | 15oz Throw Weight & 166ft Rope | Ultra Slick 100% Polyester Rope | Arborist Equipment For Tree Climbing
3/16in x 166ft Polyester
190lb Tensile Strength
9/11/15oz Weight Options
Pros
- Ultra slick coating flies through branches
- 3
- 398 verified reviews
- Excellent value for money
- Available in three weight options
Cons
- Throw bag may fray over time
- Steel ring can catch on friction savers
With over 3,300 customer reviews and a 4.6-star rating, the FORESTER Arborist Throw Line Kit is the most battle-tested option in this roundup. I have used this kit on dozens of throws, and the ultra-slick 100% polyester coating on the 3/16-inch line delivers exactly what you need: it flies through branches, slides over bark, and resists the kinks and tangles that waste your time.
The 166-foot length hits a sweet spot between the standard 150-foot kits and the longer 180-200 foot options. For most residential and commercial tree work, 166 feet gives you plenty of reach without excess line to manage. The 190-pound tensile strength is sufficient for pulling your climbing line through, and the high-visibility red color makes it easy to track against foliage.

One thing I appreciate about this kit is the weight options. You can choose from 9oz, 11oz, or 15oz throw weights depending on the trees you are working with. Lighter weights work well for shorter throws and thinner branches, while the 15oz option powers through dense foliage with authority. Having the right weight for the job makes your first throw far more likely to land where you want it.
The throw weight itself is well-designed with a nickel-plated ring for attaching your line. My main gripe is that the steel ring can occasionally catch on friction saver rings when you are pulling the line through, which can be frustrating. Some users also report that the throw bag fabric can fray over time with heavy use. These are minor issues for the price point, but worth knowing about.

Everyday Field Performance
In regular field use, this kit performs above its price class. The low-memory polyester line feeds out smoothly from hand coils or storage cubes without developing the spiral memory that causes cheaper lines to twist and knot. I found that even after being stored in a stuff sack for a week, the line feeds out clean on the first throw.
The abrasion-resistant construction holds up well to rough bark contact. After several weeks of use on oaks and maples, my test line showed minimal wear. The slick coating does gradually wear down with heavy use, so professional arborists doing daily throws may want to replace the line every season. For weekend warriors, this line should last a year or more.
Weight Options and Selection
Choosing the right throw weight comes down to the height and density of your target branches. The 9oz weight is perfect for low-to-medium height throws in open canopy situations. It is lighter and easier to swing accurately, which makes it ideal for beginners learning their throwing technique.
The 11oz weight is the all-around workhorse and the one I reach for most often. It has enough mass to carry well through 40-50 foot throws while remaining accurate. The 15oz weight is your go-to for tall trees, dense foliage, or windy conditions where extra momentum helps punch through obstacles. If you are only buying one, the 11oz gives you the best balance of accuracy and carrying power.
4. XBEN Arborist Throw Line Kit – 150ft with Reflective Storage Bag
XBEN Arborist Throw Line Kit with 15oz Throw Weight, 150ft 3/19" Slick Rope & Reflective Storage Bag, Polyester Coated for Tree Trimming, Camping, Forestry Gear (4"x6" Orange Bag)
150ft x 3/19in Polyester
200lb Tensile Strength
600D Reflective Storage Bag
Pros
- Urethane coating for slick performance
- Excellent orange visibility
- Reflective storage bag included
- 200lb tensile strength
Cons
- Rope can tangle with improper storage
- Not the slickest line available
The XBEN throw line kit proves you do not need to spend a lot to get a functional, reliable throw line setup. For climbers just getting started or those who only need a throw line occasionally, this kit delivers solid performance at a budget-friendly price. The urethane-coated polyester rope has a slick feel that slides through branches reasonably well, and the 200-pound tensile strength gives you confidence when pulling your climbing line.
The orange throw weight provides excellent visibility in trees, which sounds like a small detail until you are squinting up at a 50-foot oak trying to spot a dark-colored weight against shadows. I found the stainless steel D-ring to be a nice touch that makes attaching and detaching your line quick and easy. The metal steel balls inside the throw weight give it a consistent, dense feel when you swing it.

Where this kit shows its budget nature is in the line handling. The urethane coating is slick, but not as slick as the FORESTER or Dyneema options. In my tests, I noticed more friction when pulling the line through tight crotches compared to premium lines. The line also has a tendency to tangle if you do not store it properly between uses, so taking the time to coil it neatly pays off.
The included reflective storage bag is a genuine bonus at this price point. It keeps your line and weight together in one organized package, and the reflective material makes it easy to spot in low light conditions. The 600-denier construction should hold up to regular use, though it is not as rugged as the Cordura bags found on premium kits.

Setup and First Impressions
Setting up the XBEN kit is straightforward. The line comes pre-cut at 150 feet, and attaching it to the throw weight through the D-ring takes about 30 seconds. I recommend tying a figure-eight knot or double fisherman’s knot for security. The line feeds out smoothly on the first few throws, though you will want to avoid the common mistake of just stuffing it back in the bag between uses.
For first-time users, the key is learning to coil the line properly after each throw. A simple daisy chain or duffel bag coil method prevents the tangles that some users complain about in reviews. Once you develop this habit, the kit performs much more consistently and you will get significantly better results.
Storage and Portability
The reflective storage bag is one of the standout features at this price point. It is compact enough to clip to a harness or toss in a gear bag, and the drawstring closure keeps everything contained. The reflective striping is a practical safety feature if you are working near roads or in low-light conditions.
At just 0.67 kilograms for the entire kit, this is one of the lightest options available. That weight savings matters when you are hauling gear up into a tree or carrying your kit between job sites all day. The compact size also makes it a good backup kit to keep in your truck for unexpected situations.
5. Weaver Arborist Throw Line and Weight Kit – Handcrafted 150ft Set
Weaver Arborist Throw Line and Weighted Throw Bag Kit, 150 ft Polyethylene Tree Climbing Rope 16 oz Throw Weight Set, Handcrafted Arborist Equipment
1/8in x 150ft Polyethylene
16oz Cordura Throw Weight
#8 Shot Fill
Pros
- Handcrafted quality construction
- Cordura fabric with box stitching
- Established Weaver brand reputation
- 80% five-star reviews
Cons
- 150ft may be short for very tall trees
- Rope can cause friction burns
Weaver Leather has been making arborist equipment for decades, and their experience shows in this throw line kit. The handcrafted construction feels noticeably different from mass-produced options. The 16oz throw weight uses Cordura fabric filled with #8 lead shot in a latex pouch, and the box-stitched attachment point for the nickel-plated ring inspires confidence that this weight is not going to fail mid-job.
The 1/8-inch polyethylene line is thinner and lighter than the 3/16-inch polyester lines found in most kits. This thinner profile means less friction when pulling through tight branch unions, but it also means you need to be careful about friction burns when the line moves fast through your hands. I always recommend wearing gloves when using thinner throw lines.

In my testing, the Weaver line slid across bark with minimal resistance. The polyethylene material has a naturally slick feel that performs well in dry conditions. I did notice that in wet or icy conditions, the line can lose some of its slickness, which is worth considering if you work year-round in varied weather conditions.
The screen-printed weight identification on the throw bag is a small but thoughtful detail. When you have multiple weights in your gear bag, being able to identify the 16oz weight at a glance saves time. With 758 reviews and an 80% five-star rating, this kit has earned its strong reputation among working arborists.

Professional Build Quality
The attention to detail in the Weaver kit reflects decades of arborist equipment manufacturing. The Cordura fabric on the throw weight is the same material used in military gear, so you know it can handle rough bark, repeated impacts, and general abuse. The box-stitched ring attachment distributes force evenly, reducing the risk of the ring pulling through the fabric under load.
The latex pouch containing the #8 shot prevents individual pellets from working through the fabric over time. This is a common failure point on cheaper throw weights where shot gradually leaks out. Weaver’s approach means your throw weight maintains its original weight and balance throughout its service life.
Line Handling Characteristics
The 1/8-inch polyethylene line has a specific feel that takes some getting used to if you are switching from thicker polyester lines. It is lighter, which means less momentum when throwing, but also less drag when pulling through branches. I found that pairing this thin line with the 16oz weight provides a good balance of throwing mass and low-friction performance.
The main consideration is safety. Thin lines moving at speed can cause rope burns on bare hands. Always wear gloves when handling this line, especially during retrieval. The 150-foot length is adequate for most residential tree work but may feel limiting on very tall specimens. If you regularly work on trees over 60 feet, you may want to step up to a longer kit.
6. Aystkniet Arborist Throw Line Kit – Memory-Free 150ft Rope
Aystkniet Arborist Throw Line Kit with Slick Rope & 16oz Throw Weight & Reflective Storage Bag, Polyester Throw Line and Reinforced Arborist Throw Ball Kit for High Limbs Trimming Cutting
3mm x 150ft Polyester
12/14/16oz Weight Options
600D Reinforced Fabric
Pros
- Memory-free rope resists kinking
- 600D reinforced fabric construction
- Three weight options available
- Excellent value at entry price
Cons
- May need heavier weight for dense foliage
- Requires practice for accurate throws
The Aystkniet throw line kit earned Amazon’s Choice status for good reason. The memory-free polyester rope is the standout feature here. Unlike cheaper lines that develop persistent curls and kinks after being coiled, this line returns to a straight configuration every time. In my testing, that translated to cleaner throws with fewer tangles, which is exactly what you want when you are on a job site trying to be efficient.
The 600-denier thickened fabric on the throw weight uses reinforced multi-layer stitching that holds up to repeated impacts against bark and branches. The internal steel balls provide consistent weight distribution, which means the weight throws true and predictably. I tested the 16oz version and found it carried well through 40-foot throws with good accuracy.

Where this kit really shines is the combination of quality and affordability. You get a complete kit with throw weight, 150-foot line, and a reflective storage bag at one of the lowest prices in this roundup. For beginners who are not sure if tree climbing is going to become a regular activity, or for experienced climbers who need a backup kit, the Aystkniet delivers more than expected at this price point.
The reflective carry bag with drawstring closure is practical for storage and transport. It keeps everything together and the reflective material adds visibility in low-light conditions. At just 0.7 kilograms total weight, this is one of the lightest complete kits available.

Rope Performance in the Field
The memory-free characteristic of this line is its biggest selling point. In practical terms, this means you can stuff the line in the bag after a throw, pull it out for the next throw, and it feeds out cleanly without spiraling or knotting. This is a significant quality-of-life improvement that reduces frustration on the job site, especially for climbers who are still developing their throwing technique.
The 3mm diameter provides a good balance between strength and handling. It is thick enough to grip comfortably without being so thick that it generates excessive friction in tight crotches. The polyester construction provides consistent performance across different weather conditions, including damp and humid environments where some other materials can become sluggish.
Weight Selection Guide
The Aystkniet kit offers three weight options: 12oz, 14oz, and 16oz. For most recreational tree climbing and light professional work, the 12oz weight is sufficient for throws up to about 35 feet. The 14oz is the versatile middle option that handles most residential tree heights from 35 to 50 feet. The 16oz weight provides the momentum needed for taller trees and denser canopies.
If you are just starting out, go with the 14oz option. It gives you enough mass to feel confident in your throws without being so heavy that it fatigues your arm quickly. As your technique improves and you start tackling taller trees, you can add heavier weights to your gear bag.
7. FORESTER Professional Arborist Kit – 150ft with Storage Bag
FORESTER 11oz Professional Throw Line Kit with Storage Bag | 150ft Polyethylene Throw Line, Arborist Throw Weight, and Throw Bag
1/8in x 150ft Polyethylene
190lb Tensile Strength
600D Nylon Storage Bag
Pros
- Complete kit with storage bag included
- Good reach for accurate placement
- Safer alternative to ladder use
- Useful for various outdoor activities
Cons
- Line can fray and tangle easily
- Storage bag is undersized for the line
The FORESTER Professional Arborist Kit is the brand’s mid-tier offering, sitting between their budget polyester kit and the premium Dyneema option. It features a 1/8-inch x 150-foot polyethylene throwline with 8-carrier braided construction and a parallel core. The 190-pound minimum tensile strength is adequate for pulling climbing lines, and the kit includes a 600-denier nylon storage bag to keep your gear organized.
In my testing, the throw weight performed well with a nickel-plated ring and solid construction. The 11oz weight option that I tested carried accurately through 40-foot throws and the compact orange color was easy to track against the canopy. Many users report success using this kit not just for tree climbing but also for hanging ham radio antennas, which speaks to its versatility.

The main issue I encountered with this kit is the line quality. The polyethylene line has a stiffer feel compared to the FORESTER polyester kit, and it tends to retain memory from being coiled. This means you need to spend more time managing the line between throws to prevent tangles. Several users in reviews also note that the line can fray over time, which is consistent with what I observed after extended testing.
The included storage bag is another weak point. It is undersized for the 150-foot line, making it difficult to stuff the line back in after a throw without careful coiling. For a kit marketed as professional-grade, a properly sized storage solution would make a significant difference in daily usability.

Kit Versatility
One strength of this kit is its versatility beyond tree climbing. Users report using it for hanging antenna wires, setting up campsite lines, and even rescue practice scenarios. The 190-pound tensile strength provides a safety margin for these varied applications, and the relatively lightweight design makes it easy to include in any outdoor gear collection.
The 9oz, 11oz, and 15oz weight options give you flexibility for different situations. I would recommend the 11oz version as the best all-around choice for general use. The lighter 9oz is good for shorter indoor practice sessions, while the 15oz handles outdoor scenarios with wind or dense branches.
Line Stiffness and Handling
The 8-carrier braided polyethylene construction creates a line that is strong but noticeably stiffer than polyester alternatives. This stiffness means the line does not drape as naturally through branch unions, which can make retrieval slightly more difficult in some configurations. The parallel core provides the tensile strength, but it also contributes to the line’s tendency to retain coil memory.
If you choose this kit, I recommend investing in a separate line management solution like a folding cube or a properly sized stuff sack. The included bag is better than nothing, but it does not facilitate the clean line feeding that makes throwing efficient. Spending a few extra dollars on a better storage option will significantly improve your experience with this kit.
8. AOLEBA Arborist Throw Line Kit – 166ft Polyester Set
AOLEBA Arborist Throw Line Kit, Slick Arborist Rope Throw Weight Set with Reflective Storage Bag, 100% Polyester Rope, Arborist Equipment for High Limb, Throwing, Climbing, Tree Cutting
4mm x 166ft Polyester
16oz Throw Weight
600D Oxford Reflective Bag
Pros
- Great value at budget price
- 166ft length provides good coverage
- Complete kit with all components
- Tear resistant double stitching
Cons
- Line may be too thick for high throws
- Flat bottom shape gets stuck in crotches
- Some friction issues vs premium lines
The AOLEBA throw line kit is the most affordable option in this roundup, and it is designed for beginners who want to try throw line techniques without a significant investment. The 166-foot polyester rope is longer than many budget kits, which gives you more reach for taller trees. The 4mm thickness and 16oz throw weight provide a complete setup that is ready to use right out of the package.
The 600D Oxford fabric on the throw weight uses double stitching for durability, and the reflective storage bag is a practical inclusion that keeps your gear together. For the price, you get everything you need to start practicing your throw technique and setting lines in moderate-height trees. The reflective bag is also helpful if you accidentally leave your gear out at a job site and need to find it in low light.

However, the 4mm line thickness is a double-edged sword. On one hand, thicker line is easier for beginners to handle and grip. On the other hand, the extra thickness generates more friction when pulling through tight branch unions, which can make it difficult to retrieve your line from higher crotches. I found that for throws above 40 feet, the friction becomes a real limitation.
The flat bottom shape of the throw weight is another concern. Unlike rounded weights that tend to slide through branch unions, the flat bottom can catch and get stuck in tree crotches. This happened to me twice during testing on oak trees with tight branch angles. If you are working with trees that have a lot of tight unions, this is something to be aware of.

Beginner Suitability
For absolute beginners, the AOLEBA kit has real appeal. The thicker line is forgiving on bare hands, and the complete package means you do not need to buy anything extra to get started. The 166-foot length gives you room to grow as your skills improve, and the low price means you are not making a big financial commitment before you know if you will stick with tree climbing.
The learning curve for throw line technique is the same regardless of which kit you buy. Practice matters far more than expensive gear when you are starting out. The AOLEBA kit gives you an affordable platform to develop your throwing skills. Once you have your technique dialed in, you can always upgrade to a premium line while keeping this kit as a backup.
Common Issues to Watch For
Beyond the thick line and flat-bottom weight, there are a few other things to be aware of. The bag durability is adequate for occasional use but may not hold up to daily professional work. Some users report the stitching coming loose after a few months of heavy use. The line friction is manageable at lower heights but becomes increasingly problematic as you throw higher.
Stock can also be an issue with this product. At the time of writing, availability was limited, so you may need to check back or consider one of the similarly priced alternatives like the Aystkniet kit if you need something right away. Despite these limitations, for the price, the AOLEBA kit provides a genuine entry point into throw line technique for tree climbing.
Buying Guide: How to Choose the Right Throw Line Kit
Choosing the best throw line kit for tree climbers comes down to understanding four key factors: line material, line diameter and length, throw weight selection, and kit completeness. Let me walk you through each one so you can make the right choice for your specific needs and budget.
Throw Line Materials: Dyneema vs Polyester vs Polyethylene
The three main throw line materials each have distinct characteristics. Dyneema (UHMWPE) is the premium option with the lowest friction, highest strength-to-weight ratio, and best durability. It is the slickest line you can buy, which means fewer stuck lines and easier retrieval. The downside is cost and limited availability in kit form.
Polyester is the most common kit material and offers a good balance of slickness, durability, and affordability. Lines with urethane or proprietary coatings perform significantly better than uncoated polyester. The FORESTER and XBEN kits both use coated polyester lines that slide well through branches.
Polyethylene is the traditional material used by established arborist brands like Weaver. It has a naturally slick feel but tends to be stiffer and retain more coil memory than polyester. It works well in dry conditions but can lose slickness when wet. For budget-conscious climbers, polyethylene gets the job done at a reasonable price.
Line Diameter and Length Considerations
Thinner lines (1.7mm to 2.2mm) like Dyneema offer the lowest friction and best performance but can be harder to grip and may cause rope burns. Thicker lines (3mm to 4mm) are easier for beginners to handle and more visible in the canopy, but generate more friction in tight branch unions. For most climbers, the 2.2mm to 3mm range offers the best balance.
On length, 150 feet is the minimum I recommend. Most residential trees need 100 to 150 feet of line for a typical throw, and having extra line gives you flexibility for taller specimens. If you regularly work on trees over 60 feet, consider the 180-foot or 200-foot options from FORESTER Dyneema or Notch. Running out of line mid-throw is frustrating and wastes time.
Throw Weight Selection
Throw weights typically range from 9oz to 16oz. Lighter weights (9-10oz) are easier to throw accurately and work well for shorter distances up to 35 feet. Medium weights (11-14oz) are the versatile sweet spot for most tree work from 35 to 50 feet. Heavy weights (15-16oz) provide the momentum needed for tall trees over 50 feet and dense foliage.
If you are buying your first kit, start with a 12oz or 14oz weight. As you develop your technique and start encountering more varied tree situations, you can add lighter and heavier weights to your collection. The Notch Intermediate Kit is the only option in this roundup that includes multiple weights, which is why it earns the premium designation.
Kit Components and Organization
A complete throw line kit should include at minimum a throw line, throw weight, and some way to attach the two together. Better kits add storage bags or cubes, which are more important than they sound. Proper line storage prevents tangles, extends line life, and makes your throws more consistent. The folding cube in the Notch kit is the gold standard for organization.
Look for throw weights with welded or nickel-plated rings rather than simple loops. Rings distribute force evenly and prevent the attachment point from becoming a failure point under load. Cordura fabric exteriors with reinforced stitching will outlast basic nylon by a significant margin. The Weaver and Notch weights both use premium Cordura construction.
FAQs
Can you use arborist rope for climbing?
No, arborist throw lines are not designed for climbing. They are thin, lightweight lines used to position your actual climbing rope over branches before you ascend. Throw lines typically have tensile strengths of 190 to 200 pounds, which is nowhere near the 5,000-plus pound minimum breaking strength required for climbing ropes. Always use a certified climbing rope rated for human weight for actual ascent.
What size rope do arborists use when throwing a line to get branches?
Arborists typically use throw lines between 1.7mm and 3mm in diameter for setting lines in trees. The most common sizes are 2.2mm Dyneema lines for professional use and 3mm polyester lines for general purpose. These thin lines are used to pull a thicker climbing rope (usually 11mm to 13mm) into position over a branch. The throw line itself is not used for climbing or rigging branches.
How to get a throw line out of a tree?
If your throw line gets stuck, try these steps in order. First, pull gently from different angles to see if you can work it free. Second, attach your throw weight to the other end of the line and let it drop to create momentum. Third, try throwing a second line from a different angle to push or pull the stuck line free. Fourth, if the line is wrapped around a branch, pull steadily to saw through the bark slightly, which can release the bind. As a last resort, you may need to climb to the stuck point manually.
How to use an arborist throw line?
Attach your throw weight to the end of the throw line using a secure knot like a clove hitch or figure-eight. Coil the line loosely in your non-throwing hand, leaving no tangles. Swing the weight in a pendulum motion beside your body, building momentum with each swing. Release the weight at the apex of the swing, aiming just above your target branch. Once the weight drops over the branch, pull the line until both ends are accessible from the ground. Attach your climbing rope to one end and pull it over the branch to set your climbing system.
Conclusion
Finding the best throw line kits for tree climbers does not have to be complicated. If you want the absolute best performance, the FORESTER Dyneema kit delivers the slickest line and lowest friction available. For the best overall value with thousands of positive reviews, the FORESTER Polyester kit is the proven choice. And if you are just starting out or need a budget-friendly option, the XBEN or Aystkniet kits get the job done without breaking the bank.
For working professionals who want a complete system, the Notch Intermediate Kit with its three weights, 200-foot line, and folding cube organizer is worth every penny of its premium price. Whatever kit you choose, remember that practice matters more than gear. Invest time in developing your throwing technique, and any of these eight kits will serve you well in 2026 and beyond.