Custom Sport Leashes + Long Lines - Large Dogs (3/4" Width)
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Our original best-selling leash - designed by you, built by us.
WATERPROOF
STINK PROOF
EASY TO CLEAN
LIFETIME GUARANTEE
The ultimate customizable BioThane® dog leash for large dogs. Whether you need a standard BioThane® leash, a long leash for dogs, or a BioThane® long line for training, this ultra secure large dog leash is handcrafted to your exact specifications.
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
- Ultra secure aircraft grade autolocking carabiner 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.
Custom BioThane Leashes and all other BioThane gear typically ship within 5-10 business days (this does not include shipping/transit time). Lead times may be longer or shorter depending on order volume.
All orders are shipped via USPS.
Standard Shipping (USPS Ground) is $7.99.
Priority Shipping (USPS Priority) is $12.99.
U.S. Shipping is free for orders over $100.00.
For more information about our Shipping Policies or International Shipping click here.
Returns are accepted within 60 days of the receipt of the item. Items must be in like new/salable condition and in original packaging. All custom BioThane gear is subject to a 15% restocking fee. For more information review our Return Policy. For all returns, if you choose to use the pre-paid label we provide when you submit the return request, then a $5 label fee will be deducted from your refund or store credit. Customers who elect to use their own label to send the item back will not incur the $5 return shipping fee.
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Frequently Asked Questions
Our leashes are handcrafted from BioThane®, a waterproof and stink proof coated webbing made in the US. BioThane is incredibly strong while still being lightweight, doesn’t absorb water, odors, or dirt, and is a cinch to clean, making it an ideal material for dog gear.
Read more →
BioThane® is exceptionally strong for its weight, with a minimum 1,000 lb break strength per inch of width. An intact BioThane leash paired with quality hardware will hold up to even the strongest pullers. That said, BioThane (like any leash material) is not chew‑proof - it’s engineered for tensile force, not teeth. Please don’t leave any dog unattended while wearing a leash. If chewing happens, reach out - we may be able to repair or offer a discounted replacement.
We offer five core leash styles - pick based on your lifestyle and activities:
- Quick Ship Leash - Our classic loop‑handle leash. Ships in 2–5 business days with free returns.
- Custom Leash (Bestseller) - Fully customizable (length, width, colors, hardware, add‑ons). Ships in 3 - 10 business days.
- Simple Hands Free Leash (Customer Favorite) - Lightweight and streamlined, with a convertible handle for hands free use and custom add-ons available. Ships in 3-10 business days.
- Multiway Hands Free + Convertible Leash (Original Bestseller) - Our most versatile design; wear/use 8+ ways (standard, hands free around the waist or crossbody, multiple length options, and more), custom add-on options available. Ships in 3 - 10 business days.
- Drag Line - A leash with no handle for a lightweight “off‑leash” feel. Low‑profile design is less likely to snag; optional D‑ring at the end lets you clip a traffic handle when needed. Ships in 3 - 10 business days.
Quick tip: Not sure where to start? Our Custom Leash and Simple Hands‑Free Leash are the most popular everyday picks.
Leash Width: Choose based on your dog size and preferred leash feel:
- 3/8" - Small dogs (under 30 lb). Light in hand yet strong.
- 1/2" - Small-medium (up to 60 lb) or anyone who prefers a lighter feel.
- 3/4" - Medium-large (60+ lb), strong pullers, or for a more “traditional” leash hand feel.
Leash Length (activity guidance):
- 4 ft : Short car-to-trail transfers or ultra close quarters.
- 6 ft : Standard leash length.
- 8, 10, or 12 ft : Our most popular everyday lengths; give your dog freedom while keeping them safe.
- 15 ft - Perfect for hiking, decompression walks, and recall practice.
- 20 ft - Great for beach trips, camping, and travel - extra room to roam while staying safe.
- 30 ft - Sniffaris, big open fields, SniffSpots, and backyards. Not advised for beginners.
New to long lines? Start with something just a few feet longer than your current leash (e.g., 6 ft → 10 ft), then increase length as you and your dog get comfortable.
Read more about how to choose the right leash for you and your dog →
To clean your leash, soak in warm soapy water, gently clean with a towel or sponge, rinse and dry. Always rinse your leash and hardware with fresh water after a beach trip. Store your gear dry and in an area out of the sun (to reduce UV damage) with good ventilation.
To keep your brass clip working well, periodically clean and then add a few drops of penetrating oil such as WD-40 into the clasp/spring mechanism and open and close multiple times to help clear gunk.
Brass hardware will not rust but may develop a patina over time (can be cleaned/polished); black hardware will show cosmetic wear over time and/or rust if stored wet.
With all of our color options, we understand that it’s hard to choose! Due to the hundreds of possible color and leash combos, we’re not able to offer a photo preview of every leash color.
Here are a few resources to help you choose your colors:
- Check out our Color Combos Photo Gallery with dozens of real life product photos
- Grab access to our Digital BioThane Colors Guide + Leash Simulator (a free Canva tool to help you design your leash)
- Consider our Color Wheel product (physical swatches of each color we currently offer)
- Reach out - we’re always happy to provide color combo recommendations!
All leashes are handcrafted to order; Quick Ship Leashes ship within 2-5 business days and Custom Leashes ship within 5-10 business days. This does not include shipping/transit time.
Production times may be longer after seasonal sales or during times of high order volume.
Eligible items may be returned within 60 days of receipt for a refund (minus applicable restocking fees) or a store credit. Items must be in new, resalable condition to be eligible for return.
Personalized items (ID Tags and ID Tag Collars), treats, snuffle mats, sale, and pre made items are final sale and are not eligible for return. International orders are final sale and are not eligible for return.
Please view our full return/warranty policy.
Reach out here anytime and our small team will get back to you quickly.
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.
- 5 stars: 97 (98%)
- 4 stars: 0 (0%)
- 3 stars: 2 (2%)
- 2 stars: 0 (0%)
- 1 star: 0 (0%)
I absolutely love this lead! I love the way it feels in my hands and allows me better control on our walks, especially the extra handle. I will definitely be buying a second one in a different length. This one is great for hikes and going to the beach.
Thank you so much, Michelle! 💛 We're thrilled you're loving the comfortable feel and extra handle for added control on your walks! 🐾 It's wonderful to hear your leash is working so well for hikes and beach adventures. We can't wait to help you find your next favorite length!
We purchased this custome line in 20ft! We have a 7 month old rescue puppy who is a nervous bean. She doesn’t usually like to walk in our neighborhood because it’s too noisy and there’s too many strangers and cars that spook her. We got this long line primarily to help teach her recall (coming soon) but have actually been using it to take her to new places we know she will enjoy to build her confidence and for decompressing sniff walks. We love that this gives her freedom on trails while still keeping her safe since her recall is a real work in progress. Since switching to the long line for sniff walks she will actually take herself on a self guided walk around quieter streets in our neighborhood and is less reactive to cars! We think the freedom the long line gives her makes her feel less confined when she sees something that makes her nervous. The leash itself is impeccable quality, easy to clean, and so vibrant! We love the custom features and the auto lock carabiner since Maple is a big pup. But what we love most is the confidence it’s given our nervous bean and the adventures it’s opened us up to. Will definitely be purchasing a 10ft soon!
Thank you so much, Nicole! 💛 We absolutely loved reading about Maple and the progress she’s making! It’s wonderful to hear that her 20 ft long line has become so much more than a recall-training tool—it’s giving your nervous bean the space to sniff, decompress, explore, and build confidence at her own pace. 🥹🐾
Hearing that Maple is now choosing to explore quieter streets and is becoming less reactive to cars is such an exciting win! Giving dogs a little more freedom while still keeping them safely connected is exactly why we love long lines so much.
We’re also thrilled you’re loving the quality, vibrant color, custom features, and added security of the auto-locking carabiner. Thank you for trusting High Tail Hikes to be part of Maple’s journey. We can’t wait to hear where her growing confidence—and that future 10 ft leash—takes you both next! 💛
I cannot overstate how much we love these leashes. The 15 ft sport leash with traffic handle perfectly balances control and freedom for our 120lbs LGD mix with moderate prey drive and dog reactivity. Pike gets space to explore and sniff without me worrying the leash is going to break if he bolts after a squirrel or rabbit, and the traffic handle helps keps him close and focused around other dogs on our adventures. The added bonus? The biothane means we are not dragging sand, mud, or smells in the house after a romp. We loved it so much we got a 30 ft for training sessions, and added freedom on our weekly hikes.
Thank you so much, Alexa! Your review absolutely made our day. 💛 We're thrilled to hear the 15 ft Sport Leash with the traffic handle has been such a great fit for Pike. Finding that balance between giving dogs the freedom to sniff and explore while keeping their humans confident and in control is exactly what we designed it for.
It’s wonderful to hear the traffic handle has been so helpful around other dogs, and we definitely agree—being able to wipe off mud, sand, and adventure at the end of the day is one of the best perks of BioThane! 😄 We’re honored that you loved it enough to add a 30 ft leash for training and hiking, too.
Thank you for your thoughtful review and for trusting us to be part of so many adventures with you and Pike. Wishing you both many more happy, sniff-filled miles together! 🐾✨
These leashes are my new favorites. Babolooey is a big puppy, and pulls hard when he spots critters… the traditional rope/tape leashes were becoming an occupational hazard. The plastic biothane feels awesome and handles his sudden torque with ease; we love the hands-free option for longer hikes and the colors are bright and happy, just like Babolooey!
Thank you so much, Kyle! “Bright and happy, just like Babolooey” absolutely made us smile. 😄 We’re so glad the BioThane and hands-free setup are making hikes safer and more comfortable — especially for a big puppy with strong opinions about critters!
It means a lot to hear the leash is handling all that enthusiastic torque with ease, and we hope you and Babolooey enjoy many more colorful adventures together. ✨
This is the perfect leash for walking around the neighborhood with our 90lbs German Shepherd. She is able to sniff and be free while also walking safely next to me when needed at intersections or inside a store. Would recommend to everyone!
Thank you so much, Hannah! It sounds like you’ve got the perfect balance of freedom and control! We love knowing it helps her enjoy her sniffs while keeping things safe and smooth on your neighborhood adventures. Wishing you both many more happy walks ahead! (PS, She is beautiful!)
I have been a very happy user of High Tail Hikes for a while and recently added a 10 ft lead to my everyday lead rotation. I couldn’t resist ordering the limited chili red color, and I am so glad I did! The color is beautiful with the same excellent craftsmanship and quality I’ve always found with HTH. My pup loves the extra room to sniff while the traffic handle helps me feel in control.
Thank you so much, Ashley! That Chili Red looks absolutely stunning (perfect for fall ) — and we love seeing your pup enjoying the extra freedom of the 10 ft lead. It means a lot to hear you’ve trusted High Tail Hikes for a while and continue to love the quality and craftsmanship. Wishing you and your pup many colorful adventures this season!
This is my 5th purchase from High Tail Hikes and as usual, the quality is superb and the colors are amazing. We now have multiple leashes, leash extenders, long lines, and long line keepers. So glad I found this business.
Thank you so much, Gretchen! We’re beyond grateful for your continued support — five purchases is such an honor. We love hearing that you and your pup are enjoying the variety of leashes, extenders, long lines, and keepers, and that the colors make you smile. We’re so glad you found us too — here’s to many more joyful adventures together!
We are so pleased with our new hightail hikes leashes that we literally only use these now and have donated all other leashes! We just need to get a 6ft standard size now for travel.
That is fantastic! Thank you Avery :)
It took us a minute to figure out all the ways we could configure our custom High Tail Hikes leash; and suddenly the light bulb went off. Varying the length as we go, and having the option to convert to a hands-free configuration, means we have both control and versatility in one piece of equipment. Plus it’s beautiful and waterproof.
High Tail Hikes quickly repaired our new leash after our Belgian Malinois snuck in a chomp; we were so impressed with their quick and kind service. Our favorite dog trainer recommended this company and we are so glad she did. We recommend high Tail Hikes to all our dog-loving friends!
Wow, thank you for your kind words Pascha! We appreciate you - BTW, your BM is beautiful :)
Excellent quality and exactly what we were looking for. Our GSD loves swimming in the creeks and rivers and this is the perfect fit when we are required to keep her on a lead while doing so. The customization options are great as well. Thanks so much!
YAY! We love to hear that! Thank you John! We wish you and your GSD many amazing adventures :)
This is my second HTH leash! I chose the sports clip to use for my larger dog who has managed to unclip a standard clip from his harness when rolling on walks. I feel much safer walking him on this. The 18” traffic handle I added has been amazing to use when passing others on walks or for other moments where I need him closer, especially given that he’s a strong dog and can pull slack out of my hands if he pulls hard enough. I’m sure this won’t be my last HTH leash!
Thank you so much Megan! So happy to hear how much you are loving your new HTH gear!
I love my dog's new sport leash! The carabiner clip is easy to use, and I can walk him without worrying if he'll snap the leash clip (cause that totally hasn't happened with other leashes...)
The traffic handle at 6ft makes it easy to keep him close if need be, but I'll never go back to less than 12 ft for his neighborhood walks. We're both so much happier. The bonus is that we've gotten noticed in the neighborhood more; I think his spiffy new leash takes all the credit 😉
Thanks so much!
Fiona! We love hearing how much you love your new HTH gear. And that you're turning more heads, too! Thank you!
It was a very nice leash. But, sadly when I left my pup tethered for a minute he somehow managed to tear/rip it into two pieces.
Hello Savannah! Please reach out to us at support@hightailhikes.com. We have a repair program that might work for you!
We are loving our 20 ft sport leash. The auto-lock carabiner is very secure and gives us extra peace of mind when we are out and about. The biothane has a great texture, it is easy to keep a grip on and tie with if needed but still super easy to clean off and never gets caught up on itself. Our dog has been dragging this thing through grass, redwood duff, sand, gravel, and more but you’d never guess it’s taken such a beating. There’s not a mark to be found on it, unlike our old flat nylon long line that is now lined with frays. And for the outdoors folks, the poppy color is a perfect blaze orange, highly visible! We will definitely be picking up more Hightail Hikes products moving forward.
Thank you Ky! We love hearing how much you are loving your HTH gear! It is amazing how durable the BioThane really is.
I bought this because the basic (nylon) long lead I bought broke and my dog ran off- luckily our recall is significantly better now! I did a lot of research and found out that biothane is really durable and boy is it! My girl is an APBT and pulls if she's found a scent she really wants. I love for her to have more freedom on our hikes, so I invested in a biothane long lead.
This leash is adjustable so I can put it around me and it becomes hands free. It's durable- literally was wrapped around a log with my girl pulling and there's no stretch in the leash! It also has sport clips that are definitely not coming undone anytime soon!
If you have a strong dog, I highly recommend the sport clip. If you want a leash that is easy to clean and durable enough to withstand a strong pulling force, get this leash!
Angelina, what a great testimony for the strength of our BioThane lines! So glad you, and your girl, are loving her new freedom! Thank you!
My dog and I absolutely love our long line. We go on daily sniffaris at the local park. It gives him the freedom to explore while keeping him safe. It is also great for working on recall when there are a lot of distractions. Can't wait until the weather warms up and we can use it for swimming in the local creek. No more gross, wet leashes, plus, this leash is easy on the hands.
Love this Nancy! You summed it up perfectly. Thank you so much!