Series 1, 2 or 3 Fi Compatible 3/4" or 1" Width Martingale BioThane Collars (Over The Band)

  • Current Processing Time: 2-6 business days
SeaFlower Co is now an official partner for Fi compatible dog collars! Our collars have been Fi tested and approved for your next adventure! Enjoy our exclusive Waterproof Martingale BioThane Collars while also enjoying the safety of your Fi GPS device.

Regular price $49.95 Sale price$42.46 Save $7.49
Due to this collar being custom made to your measurements & color preferences we cannot accept returns or exchanges. Please double check your measurements & feel free to email me with any questions prior to ordering at

Please add the following in the “notes” section at checkout. I can make this style collar for dog's whose neck measures 15" and up

  1. Add your pup's EXACT measurements. If either measurement (A or B) is larger than measurement (C), I will make the collar slightly larger to ensure it will slide off & on comfortably.

  2. Please add the primary (main color) & secondary (Fi end link connectors) BioThane color.

Fi tracker is sold separately. If you don’t already have your own, purchase your tracker HERE.

3/4" or 1" width Fi compatible martingale collar: is made "over the band" style, to give your Fi device extra protection, & allows the collar to still be functional without the Fi tracker attached. 

  • Made with heavy duty BioThane in 3/4" or 1" width
  • 100% Waterproof
  • Stink proof/Mildew proof/Dirt proof
  • Vegan
  • Classy look & available in a variety of colors
  • BioThane is flexible, similar to the feel of broken in leather (even in freezing temperatures)
  • Low maintenance, easy to clean
  • Very Durable, will last longer than leather & nylon
  • 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 collar will never come apart.

*Brass is extremely strong & durable. However, keep in mind brass has a natural patina/tarnish when it's exposed to certain elements, which is completely unavoidable. This is not rust as brass will never rust, but if your dog has a lighter/white coat, the tarnish that forms on the brass could discolor your pup's neck fur. No worries as this can be easily washed out with shampoo. You can also clean and shine your brass hardware using a jewelry cleaning cloth.

BioThane Color Chart

Martingale collars are a great training tool for pups that tend to pull on leash, or for pups that are known to slip out of their collars. To correctly measure your pup for a martingale, measure the width around the following three 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) we will make the collar slightly larger to ensure it will slide off & on comfortably. So please don't add an extra inches to your measurements, just provide us with the exact measurements of your pup & we will size it up accordingly.

If you are unsure about the proper size you should order, please feel free to email me ( with your pup’s measurements and I will gladly help lead to you to the proper size.

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