Fi 3 Compatible 1" Width BioThane® Martingale Collar
- Current Processing Time: 2-3 weeks
Take your dog on any adventure with confidence, thanks to BioThane® - the 100% waterproof, dirt-proof, and adventure-proof material. Whether your dog loves to swim, hike, surf, or play in the mud, our BioThane® gear is designed to keep up with your dog's active lifestyle. With a range of colors & patterns to choose from, you can find the perfect collar to match your dog's personality.
Martingale collars are specifically designed to provide more control than a standard collar & (when fitted properly) will prevent your dog from escaping or backing out of their collar due to the cinching function. While martingale collars don't prevent pulling, they are an excellent training tool for teaching your dog good leash manners. They are highly recommended by trainers as the go-to collar choice for training dogs. Please be sure to follow our "how to measure" guidelines below to ensure you get the perfect fit, as these style collars are NOT adjustable.
Due to the length of the martingale chain and the spaced needed for the fi device, we can't make the overall circumference of these style collars any smaller than 15”.
- Constructed with super heavy 1” BioThane®
- 100% waterproof, anti-microbial, & very durable- making them perfect for any adventure from sea to summit
- Low maintenance & cleaning is a breeze- just wash with soap and water or hose it off, & its ready for the next adventure.
- Reinforced with heavy duty screws at all stress points to ensure for the strongest hold. We believe screws are the most durable as the threads are tightened & reinforced to ensure your gear will never come apart
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These Fi 3 compatible martingales are made "over the band" style with the 3/4" width authentic fi end links. This style gives your Fi device extra protection, & allows the collar to still be functional without the Fi tracker attached
Fi tracker is sold separately. If you don’t already have your own, purchase your tracker here. Use our code: SEAFLOWER20 to save $20 off the activation fee from your Fi Series 3 purchase.
It is very important to carefully measure your pup to get accurate measurements as these collars are NOT adjustable. The best to way to measure for these style collars is with a soft measuring tape or string. Gently wrap the tape or string around the following 3 areas. The tape should be snug but not too tight. If your dog has very thick fur be sure to get the tape closer to the skin.
Measure the following 3 areas:
- the widest part of your pup's head (A)
- the neck just behind the ears (B)
- the neck where the collar naturally sits (C)
As this type of collar slides over your pup's head & is non-adjustable, if either measurement (A or B) is larger than measurement (C) the collar will need to be slightly larger to ensure it will slide off & on comfortably. As a general rule, we recommend adding .5-1" to the widest head measurement to make sure you can slide the collar off and on comfortably. You can use the measuring tape/string to ensure you can slip over your dog's head. If you prefer a looser fit or you have a fluffy pup, feel free to add a little more room.
When measuring the neck circumference (measurement C) be sure you can fit 2 fingers under the tape/string.
When tension is applied to the martingale chain it will reduce the collar's size by a max of 4". For example if the overall circumference of the collar is 18", it can tighten down to approximately 14".
*If your dog's head is significantly larger than their neck, this collar will sit lower than "normal" collars.

- BioThane® is a piece of cake to clean. Wash in soapy water or just spray off with the hose and, BOOM, it's as good as new. Towel dry or air dry, and it's ready for more fun & dirty adventures! To keep your BioThane gear performing at its best, we recommend rinsing your dog’s leash or collar with fresh water after any water-based or dirt-heavy activities. Take special care to rinse the hardware on your BioThane® gear. This will help to rinse off dirt, grime, and salt water all of which can, over time, wear down the hardware.
- To ensure the longevity of your BioThane® product, avoid exposure to certain chemicals such as, DEET, insect repellents, topical flea and tick products, as well as lotions and body oils. This can lead to brittleness and cracking over time.
- UV printing is the most durable method for printing on BioThane®. While it's incredibly resilient to the elements, it may show signs of wear and tear over time.
Safety & durability is our top priority at SeaFlower Co. We use high quality materials and durable, thoroughly tested hardware for all of our products. Our products are made with ruff play in mind, but no pet gear is indestructible. Please inspect your equipment regularly for any signs of wear and tear & replace when necessary. It is the buyer’s responsibility to determine what gear is appropriate for their dog’s size, strength, and activity level. SeaFlower Co is not liable for any injuries or damage that may occur as a result of use.
She was super patient and helpful in helping me get the perfect fit and style for my fur baby. We love it. ❤️ thank you!
They had our color yellow and were super easy to work with. We need a FI3 collar with a martingale option and we were even able to add a name plate. It looks super sharp on my black Rottie! Yellow really is our color. Thank you!
We recently purchased the Fi compatible Biothane martingale collar, which April customized even further and added a buckle. We love the fact that it’s waterproof and smell proof, and the colors are beautiful. We have several items now, and everyone of them is beautiful, sturdy and durable. And the fact that you can easily have them customized is amazing. So glad we found this company.