BioThane Long Line Keeper - 3 in 1 Design
- Unit price
- /per
Store your leash, use as a traffic handle, or turn into a safety strap with an added carabiner.
WATERPROOF
STINK PROOF
EASY TO CLEAN
LIFETIME GUARANTEE
3-in-1 Long Line Keeper - Simple, Versatile, and Adventure-Ready
Keep your long lines neat and ready to go with our 3-in-1 Long Line Keeper. This compact accessory does more than just store your gear - it can also be repurposed as a traffic handle for extra control or a safety strap with the addition of a second carabiner. Handmade from BioThane, it’s waterproof, stink-proof, and built for years of use.
Why you’ll love it:
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Stay organized - store one 30’ long line or two shorter lines (20’ or less) without tangles
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Versatile 3-in-1 design - use as a line keeper, traffic handle, or safety strap
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Premium BioThane® - lightweight, antimicrobial, waterproof, and easy to clean
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Handmade quality - crafted in our Oakland workshop and backed by a lifetime guarantee
Small but mighty, this multitasking tool simplifies your gear setup and adds peace of mind on every outing.
Custom BioThane Leashes and all other BioThane gear typically ship within 5-10 business days. Lead times may be shorter or longer depending on order volume and time of year. Production lead times do not include shipping or transit time.
Shipping Fees
Standard Shipping (USPS Ground) is $7.99. Priority Shipping (USPS Priority) is $12.99.
U.S. Shipping is free for orders over $85.00 (after coupons and discounts).
Shipping Time
All U.S. orders are shipped via USPS. You will receive an email with tracking info once your order ships. Please note that once your order is shipped, we cannot provide additional tracking information beyond what is available to you through USPS.
For more information about our Shipping Policies or International Shipping click here.
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FEATURED PET GALLERY
Frequently Asked Questions
We offer a range of Biothane dog walking and training accessories including Traffic handles, safety straps, long line keepers, clicker straps, utility belts, keychains, and more. We also offer non-BioThane walking accessories like poop bags and waste bag holders, all designed to pair seamlessly with our BioThane® gear.
Yes! Our BioThane® accessories are made with solid brass or Sport (carabiners made from aircraft grade aluminum paired with and black steel) hardware. All are water proof, odor proof, and easy to clean.
Most accessories clip to a leash D‑ring or can be attached via a carabiner to our Utility Belt or your own waist belt. Some items (like leash keepers or traffic handles) are intended for specific products; see each product page for instructions.
Soak in warm soapy water, clean with a towel or sponge, and rinse with water. For tough messes, a light scrub with a soft sponge or toothbrush works well. Always store dry. Solid brass will not rust, but may develop a natural patina over time. Black‑coated hardware may show cosmetic wear or rust over time, but strength isn’t compromised.
Our BioThane® accessories are available in our full range of colors; perfect for matching your other walking gear. Many of our accessories have custom width and length options to fit you and your dog.
ABOUT US
We are a woman-run team of positive dog reinforcement professionals on a mission to help dogs and their guardians live their best lives together. Our goal is to help enhance the dog-human bond through products that prioritize connection, safety, and comfort over control.


I bought the line keeper to be a traffic handle. I wanted to give my dog more freedom on walks, but the longer leashes were making me nervous. My dog is strong! Having a short handle for emergencies or crossing a busy street makes me feel more comfortable. I don’t have to worry about her pulling the line through my hands when I have to keep her close. It has definitely made me more confident when walking with our new 10ft sport leash. I like the large clip and the length of the loop is perfect!
Where has this been all my life?! Holds my 20 foot and 10 foot long lines perfectly. There’s a quick tutorial on the HTH Instagram if you aren’t 100% sure how to use it at first but it’s so simple yet so effective. I will definitely be ordering more as my long line collection grows!