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All BioThane Products
Custom Brass Leashes + Long Lines - Medium Dogs (1/2" Width)
Custom Brass Leashes + Long Lines - Medium Dogs (1/2" Width)
Custom Brass Leashes + Long Lines - Medium Dogs (1/2" Width)
Custom Brass Leashes + Long Lines - Medium Dogs (1/2" Width)
black, brown, red, blue, and teal biothane dog leash with brass hardware on white background curved together
Custom BioThane Leash in Sage and Forest Green BioThane on white background with key features outlined
eight biothane color samples from the core collection - chili red, persimmon, flamingo, poppy, goldenrod, green apple, sage, & forest green
eight biothane color samples from the core collection - teal, ocean, blueberry, lavender, violet, plum, caramel, & black
eight biothane color samples from the seasonal color collection - red, coral, bluebird, granite, magenta, periwinkle, midnight & olive
small dog on the edge of grass with woman holding red biothane long leash
dog near water wearing a long line biothane leash
Custom Brass Leashes + Long Lines - Medium Dogs (1/2" Width)
Custom Brass Leashes + Long Lines - Medium Dogs (1/2" Width)
graphic Built in Traffic Handle example
Custom Brass Leashes + Long Lines - Medium Dogs (1/2" Width)
Bestseller

Custom Brass Leashes + Long Lines - Medium Dogs (1/2" Width)

$32.00

Our original best-selling leash - designed by you, built by us.

Solid Brass Sport (Autolocking Carabiner)
Small (3/8") – Best for dogs under 30 lbs Medium (1/2") – Best for dogs 30-60 lbs Large (3/4") – Best for dogs over 60 lbs

Add These Popular Customizations

Make mine two-tone

$8.00

Make mine two-tone

Add an accent color to both ends of your leash for a unique, personalized look! Great for showing off your style or making your leash easier to identify.
Choose an accent colorChili Red
Limited edition

Add D ring to handle

$3.00

Add D-Ring to Handle

Perfect for clipping a waste bag holder, keys, or accessories.

Add built in traffic handle

$10.00

Add Built-in Traffic Handle

Provides quick and close control in busy areas or around other dogs. Check that placement does not allow your dog to step through the handle if your leash will be loose or dragging.
Choose placementAt base of leash

Upgrade to scissor snap

$5.00

Scissor Snap

Bolt Snap: Classic, durable, easy to use.

Scissor/Trigger Snap (additional charge): Quick-release, secure, sand-resistant - great for beach trips.

Quick Release Long Line Keeper

$18.00

Add Quick Release Long Line Keeper
persons hand holding the clip on the biothane quick release long line keeper

Keep your leashes or long lines tangle free and organized at home, in the car, or on the trail with our bestselling accessory! Lightweight, versatile, and easy to use, in your choice of color.
Choose Color Chili Red
Limited Edition
Total: $32.00

WATERPROOF

STINK PROOF

EASY TO CLEAN

LIFETIME GUARANTEE

Design Your Dream Everyday Leash - Hand Crafted Just for You!

Our bestselling Custom Leash is handcrafted to order in our Oakland workshop, built around the details you choose. Choose your leash width, length, color, and hardware type - then add personal touches like a two-tone accent color, a built-in traffic handle for extra control, or a handy D-ring on the handle for clipping keys or a poop bag holder.

BioThane® makes your leash lightweight, waterproof, and stink-proof - ready for everyday walks, big adventures, and everything in between. With endless ways to customize, you’ll get a leash that’s not only durable, but totally your own.

Why you'll love it: 

  • Custom made to order in your choice of width, length, color, and hardware

  • Optional two-tone accent color at handle and clip end

  • Optional built-in traffic handle for quick control

  • Optional D-ring on handle for clipping accessories

  • Handmade in Oakland by our all-women team. Your custom leash ships in 5 to 10 business days.

FEATURED PET GALLERY

Frequently Asked Questions

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.

Read Our Story

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