Custom Sport Leashes + Long Lines - Large Dogs (3/4" Width)

Our All-Time BEST SELLER!

Build your own custom BioThane® leash or long line today!

Why You'll Love It

✅ 15+ Color Choices – Choose from a wide array of beautiful colors in a single or two-tone design. The possibilities are endless!

✅ Made from Genuine BioThane® – Stink-proof, antimicrobial, easy to clean, and super durable, while remaining soft and comfortable in the hand.

✅ Handmade to Order – Crafted in Oakland, California by our all-woman team. Your custom leash ships in 5 to 10 business days.

✅ Lifetime Guarantee – Enjoy peace of mind with our lifetime guarantee against defects in materials or workmanship.

💬 “Best item I've ever purchased for my dog. Super high quality, feels like leather, wipes clean, and withstands all types of adventures. 10/10!” – Tessa C.

How to Customize Your Leash

Step 1: Pick Your Hardware

• Solid Brass – Rust-proof and durable, with a classic look.

• Sport (Autolocking Carabiner) – Lightweight, strong, and secure, with a modern look.

Step 2: Pick Your Size

Width:

• 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

Note: These are comfort guidelines, NOT safety ratings. BioThane® is incredibly strong and an undamaged line will not break even with the most determined pulling. Longer lines naturally become heavier. For better handling and ease of use, choose a thinner width as length increases.

Length:

• 4 to 6 ft – Best for close control in crowded or tight spaces.
  6 ft = conventional "standard" leash length

• 8 to 12 ft – Perfect as an all-purpose, everyday leash 
  10 ft = bestselling everyday leash

• 15 to 20 ft – Ideal for hikes, beach trips, camping, travel, and training
  15 ft = ideal hiking leash
  20 ft = versatile adventure + training leash 

• 30 to 50 ft – Best for open fields, quiet beaches, SniffSpots, or backyards.
  30 ft = great for intermediate/advanced long line users

Step 3: Pick Your Colors

• Single Color or Two Tone - Two tone leashes have an accent color at the clip and handle ends. 
  
  Most popular color combos:
  Sage + Forest Green 
  Black + Caramel
  Ocean + Midnight
  Poppy + Plum 
  Green Apple + Blueberry
  Lavender + Violet

Step 4: Choose Your Handle

• Standard Loop Handle - default selection

• Convertible Handle + Sliding O-Ring – For hands-free use; our most popular customization!

• No Handle / Drag Line – Reduces snagging; ideal for off leash or off trail hikes.

• Add specialized hardware like a D Ring or O Ring to your leash handle.

Step 5: Add an Optional Built-in Traffic Handle for more control when you need it:

• At base of leash

• 12" above leash clip (most popular)

• 18" above leash clip

• 24" above leash clip

• Custom placement (Leave a note at checkout)

Need Your Leash Faster?

Check out our Standard Leash Collection – same great quality with a shorter lead time and FREE returns!

Need help?

• Not sure which leash is right for you? Check out our FAQs or Contact Us.

• Learn more about our Shipping and Return Policies.