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BioThane gear turnaround time 3-10 business days Free US Shipping Over $85

What Our Customers Say

Based on 1302 reviews
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BioThane Leash Extender - Sport
Kelly and Poppy :) (Auburn Hills, US)
The best accessory!

I ordered the 36 inch extender to take along on walks when I don’t want to carry my entire long leash. This thing is AWESOME! It’s smaller and lighter than I expected (can fit in your pocket), but it’s also strong enough to hold up to my puppy’s antics. It gives us an extra few feet to work with if I decide I want to let her go for a swim or explore a bit further away from me. The sport clasp is fantastic too- I’ve had other clasps fail on me, but I feel my dog is very secure on this. I can’t recommend it enough!

That is fantastic! So glad you're loving your new HTH gear and that you've found multiple ways to use it! Thank you Kelly & Poppy!

Great custom leash

I needed a long line without a handle and this is a great leash. The biothane material meant cleaning it was a breeze, even though it was dragged through a creek.

Glad to hear we could meet your needs Kat! We wish you many happy adventures, thank you!!

Comfortable leash to hold and gorgeous to look at!

I’ve always used leather leads for our dogs, but tan as for a customizable bio thane product caught my attention. The lead is soft to hold (I have the widest width even though our dog is under 30 pounds), the brass snaps and D rings are great and it looks amazing. It’s easy to hold in the rain and the quality is top notch. Definitely need more of these at our house.

That is great! So glad you are enjoying your new HTH gear, THANK YOU Meredith!

Favorite Leash!!

These are the only leashes I use to walk my dog. I have 3 or 4 of the 1/2inch hand free convertible leashes with several different lengths. I prefer using the 6’ for everyday walks. Such high quality and so easily to clean! Will absolutely be purchasing more

We wish you many amazing adventures with your HTH gear! Thank you so much Bailey!

Great so far!

This was an upgrade for me from a store-bought crossbody leash that was a little too short for my sheltie/iggy mix to avoid being underfoot all the time, and I'm so happy I did. This hands-free leash is hands-down my favorite of the items I ordered. I chose the 1/2" width even though my dog is only 16-17lbs - the skinnier version just looked TOO skinny for the length I wanted, especially since I got her the 1" collar.

I'm not sure why there are those coating "ripples" on the wide part of the lead, but they don't impact function and don't bother me. I did not see the same texture on the ID collar I also got.

I will be picking up an even longer convertible leash for training, and probably a 4ft lead as well (6ft is a little too long for us on potty breaks or vet visits, but I didn't realize you could custom order a shorter one!)

Happy to hear you are enjoying your new convertible leash Emily! Love those colors together too :)

Love the quality

This is my second purchase after buying a custom leash for my Service Dog. As a handler these leashes are amazing being able to design a leash specifically tailored to my needs was key! It makes the safety of my dog and myself easy. The leashes are easy to clean and care for and are rugged and strong! I bought the second two as his down time leashes for his fun walks, when he’s out of harness. They were part of the sale promotion. So we’re made for someone else but never used or picked up. Just at a discount which was great !!!! One is a 15ft lead the other is a 6ft. Both are again made with the same quality materials and I use when he is on breaks. I love the quality of all their products and quite frankly won’t use anything else!

Wow! What a compliment, thank you so much Paula! We wish you both many amazing adventures together - working and 'off duty' of course!

Love my new leash!

Mom says this is the best leash ever! She wraps it around her waist and off we go. She said I don’t drag her around near as bad as I use to.

Luca! We are so glad to hear your mom is loving your new HTH gear! Thank you for sharing - we wish you both many fun adventures!

Mom loves my collar & name tag!

So Mom said we needed a new collar with the name tag attached because my old name tag hung off my collar and might get caught on something. She put her number & CALL MY MOM on the tag because she would totally freak if I got lost! She picked these colors because she said they were fun and complemented my color, or something like that.

Your mom is right Luca, those colors look great and really stand out! She was so smart to put 'CALL MY MOM' on your collar too! Please tell her we said THANK YOU!

Love it!

I love this leash so much! I got the seafoam + lavender and the combo looks great. Helps on walks when I have to hold my dog's poop bag and other things.

YAY! Thank you Samantha, we love hearing that! And those colors are beautiful!

Pretty but not durable

I had this for one month before it split and became unusable (because I am worried it may snap). Very pretty, but for the price it should withstand more wear.

More relaxed walks!

I purchased two 10 ft leads for our neighborhood walks. The leashes are very well made and we found the transition from traditional leashes to long lines fairly seamless. The videos helped!

I love the versatility of being able to easily give my pups more freedom! They can now explore and even get some zoomies on walks! I’ve even noticed decreased reactivity! Yay for sniffing!

That is so awesome! We love hearing that Brittany, thank you!!

Safety Strap = Peace of Mind

I recently upgraded my leash and added a safety strap to my order. My girl, Mandy wears a harness but she is still learning not to pull so much. She is making progress but if she sees something of great interest (squirrel etc), she will jerk the leash very hard. I have always been concerned that if she doesn't rip my shoulder out of socket she might break the harness and be free to chase her furry friend. When I saw this safety strap I was so excited to add this to our tool box. Now I know she will be safely attached to her collar if the harness were to fail. This is a great addition to our Biothane leashes. I was able to get it in matching colors and I love the hardware.

That is great! I'm sure your Mandy will be doing better and better! Thank you Eileen, we love the photos too!

Great long leash

Amazing quality and so useful for when we go walking around

Look at that smile! Thank you for sharing!!

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Custom Brass Leashes + Long Lines Large Dogs (3/4" Width)
Future Harrison (Nine Mile Falls, US)
Drag or connect!

We let the leash drag on hikes or connected on a jog. Never a hitch and easy to clean.

So glad you're enjoying your new HTH gear! Thank you Robin!

Rusted grommets after a month

I absolutely loved the customization, ability to easily clean, & FI collar integration, and really had high hopes, but I'm so disappointed. I purchased on 03/17/2025, received my order about 10 days later, so my pup has been using her new collar less than a month and the grommets have already started rusting. We live in Florida, and she has an active beach bum lifestyle, so I went with a bio thane collar, but apparently the salt water was too much for the grommets to handle, which is so frustrating to pay so much money on something we're not going to get much use out of.

Birthday Collars

I got two collars for two dogs I am close with and have the opportunity to see grow. They both have their liquid fun. The black one loves snow and the yellow loves to dash through water. Both are sweet boys and their birthdays had passed but got them a few days after the yellow ones birthday. I will be ordering one for my girl once the time comes!!!!

What great birthday gifts for two sweet pups! Thank you Gina for sharing their pictures as well :) We love seeing your new gear in action!

The best leash for nose work!

My dog Fox is doing nose work classes that require long leashes. The 10’ leash for small dogs is perfect! It doesn’t tangle and slides through my fingers like butter. I can’t wait to try it out on a hike.

That is great! We love hearing how much you and Fox are loving your new long line, Thank you Jan!

Great collar but…

This collar is very compatible with FI 3. I needed a special size and the collar fits perfectly. But…I ordered teal and black. I was very disappointed that the “teal” is a weird green, not a blue green which I expected it to be. I can live with it only because my dog is a blue Merle Aussie (real teal would have been perfect!) and his coat covers the collar most of the time.

Thank you Joan! Glad it is working perfectly, Sorry to hear the color wasn't perfect - sometimes its hard to see the real colors on screen. Have you tried our color simulator yet?

S
Handle Type
Sarah J Dixon (Salem, US)
Love having the flexibility.

I have these in both a 4ft and 8ft length. I can them on to my belt or make a handle if needed. The added traffic handle is just a sweet bonus for when we stand at corners and gives me just a bit more control. Love this product. And love the ability to switch between lengths as my needs arise.

Love that you have so much flexibility! Thank you Sarah!

Best Collars!

I was looking to upgrade my dogs’ original Fi collars and boy did I. They’re beautiful and turned out exactly like I imagined. Also super durable and easy to clean-both requirements for my high energy/maximum chaos mixed breeds. Highly recommend!

Thank you for taking the time to leave a review! We are thrilled to hear that our Fi Series 3 BioThane Collar exceeded your expectations. We strive to provide both durability and style for our furry friends. It's great to know that your dogs are loving their upgraded collars. Thank you for recommending us to others. Happy adventures!

Fantastic collar!!

This collar is super durable, easy to clean, and has vibrant colors! I love how sturdy it is and the embedded tag is so much better than a usual hanging tag

Thank you so much Emma! Much better than the jingle for sure!

Love this collar!

Obsessed with the new collar for my puppy. The quality is great, and I’m excited to have a collar that’s easy to clean. Love all the color options and will likely get more in the future.

Thank you Alyssa! Your pup is adorable!

10/10

Absolutely beautiful and sturdy. 10/10 recommend.

Thank you so much Olivia! (Thanks for the pic too!)

This is the best leash!!

I love this 10 ft sport leash! I have a 2 year old lab and she is pretty good on a leash. I enjoy being able to let her sniff and be doggy while we walk most of the time, except when I need to get her close for passing other people and dogs. This leash gives us just the right amount of space to allow her freedom without being unwieldy. I previously had a 10 ft rope leash, but it is heavy and gets dirty easily. This leash is very light, but sturdy, and is super easy to clean if it gets muddy.

Awwww, we just love hearing that Michelle, Thank you! We hope you both many exciting adventures together!

So cute!!!

Bought 3 for each of my Shibas. Very easy to clean which I was looking for since they like to roll around in the dirt. Would 100% recommend and will most likely buy again in the future! Love these!

That is great! So glad we could check all the boxes for you, thank you Adriana!