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biothane collar size guide
biothane infographic
10% offer from vivid canine

Fi Series 3 Compatible - BioThane® Waterproof Buckle Collar


The Fi Series 3 Compatible - BioThane® Waterproof Buckle Collar is perfect for those adventurous dogs! Now you can enjoy the waterproof and easy-to-clean benefits of BioThane® while using your Fi device! 

  • Available in sizes small to x-large
  • Coordinating accent pieces for the end links
  • Hardware options include Solid Brass and Matte Black Zinc Alloy
  • Over-the-band style eliminates stress on the Fi Device
  • Convenient charging - no need to remove the Fi Device 

We want you to be confident that you have selected the best collar for your dog. If you are unsure of the collar sizing or have any other questions concerning your order, please contact us before placing your order. Also, if you would like to see any color combinations together, please send us a message and we'll be happy to show you!

Fi Device is sold separately.  If you need a Fi Device, you can purchase one HERE or visit  You can save $20 off your Series 3 activation with code VIVID20


Due to lighting and differences in monitors, actual colors may vary slightly from what appears online.

Our full Disclaimer/Liability Policy is available in our FAQ.


• Genuine Beta 520 Standard BioThane®

• Machine riveted with solid brass hardware / matte
black hardware

• Solid brass / Matte black Zinc Alloy buckle

• Strap Keeper - Primary Color

• Made in the USA with love


Our buckle collars are spaced out in 1-inch increments. We recommend choosing a size that coordinates with your dog's neck measurement at the middle hole. Be certain to allow for some wiggle room on either side to allow for fluctuations in weight and/or fur. We are always here to help so please reach out with any questions you may have.


• Fits necks 10" - 14"


• Fits necks 14" - 18"


• Fits necks 17" - 22"


• Fits necks 21" - 26"

Tips for Measuring

When it comes to finding the perfect collar for your dog, getting the right size is essential. A collar that is too tight can be uncomfortable and restrict your dog's movement, while a collar that is too loose may slip off or pose a safety risk. To ensure a proper fit, follow these guidelines:


Using a flexible measuring tape, measure the circumference of your dog's neck. Make sure to measure at the base of the neck, where the collar will sit. There should always be enough room between the pet’s neck and the collar to slip one to two fingers between them comfortably. This ensures that the collar isn't too tight. Make a note of the measurement in inches or centimeters.


If your dog is still growing, it's best to choose a larger size to accommodate their future growth. Additionally, if your dog has a lot of fur around their neck or experiences weight fluctuations throughout the year, consider these factors when selecting a size.


If your dog's neck measurement falls in between two sizes, it's recommended to choose the larger size.


For collars with a size range, it's best to choose the range where your dog's measurement is close to the middle. This allows for adjustments both up and down, providing a better fit.


For collars with a fixed size, it is very important to obtain an accurate measurement of your dog's neck where the collar is normally worn, as these collars are NOT adjustable. Take into consideration the thickness of the dog's fur to be certain you are getting an accurate measurement of the dog's neck.

Remember, a properly fitting collar should be snug enough to stay in place, but not too tight that it causes discomfort or restricts your dog's movement. By following these guidelines, you can ensure that your dog's collar fits comfortably and securely.

We want you to be confident you have selected the best size collar for your dog. Do not place an order if you are unsure of the collar sizing. Please email us with any questions to


We recommend handwashing your BioThane® gear with mild soap and water and drying it with a soft cloth. Please keep in mind that brass hardware will tarnish (patina) over time, regularly polishing/cleaning the hardware will minimize tarnishing. Our gold (brass plated) and matte black hardware can show wear and tear over time, however, this is normal and does not affect the integrity of the hardware. To clean the brass plated and matte black hardware, we recommend washing with mild soap and water and drying with a soft cloth.

Important Note: Please make sure to always thoroughly dry all hardware after use in any water, especially salt water. This will help to prevent the hardware from rusting.

While BioThane® is incredibly versatile and repels MOST of the dirt and grime it comes across, please note that it is not completely stain-proof in all circumstances. Regular cleaning is recommended to keep your BioThane® gear looking new.

Why Biothane?

We only use Genuine BioThane® on our leashes and collars. BioThane® is a Polymer-coated webbing. The Polymer coating makes this webbing a great leather alternative, as it is more durable, waterproof, and easy to clean. BioThane® rinses clean in seconds, will not mold or mildew, and will not absorb odors. BioThane® is manufactured in the USA. Regular cleaning is recommended to keep your BioThane gear looking new.

Fi Series 3 Compatible - BioThane® Waterproof Buckle Collar

$55.00 USD

Customer Reviews

Based on 9 reviews
Adella S
Great product. It looked like a wider band...

Great product. It looked like a wider band in the photos. I thought it would be 1' and flush with the edges of the Fi device, however it is more like 3/4' but still like it very much and do recommend it. Thank you!

Abbie S
We love the option to have two colors. Loo...

We love the option to have two colors. Looks so nice on our pup!

Breana G
The quality of this item is fantastic! It...

The quality of this item is fantastic! It feels extremely durable especially for a dog as active and adventurous as ours. I don't feel that the product will lose any integrity if submerged in water for periods of time or in rough play. The customer service in next to none, even with all my questions regarding color, I was given well constructed responses which ultimately led to the purchase a product I am extremely happy with!

And my pup looks great!


They got it wrong twice. Bad service.

Velma N
Nice collar that is easy to clean. Qualit...

Nice collar that is easy to clean. Quality is very good