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All BioThane Products
Fi Series 3/3+ BioThane Collar - Brass Integrated Design
Fi Series 3/3+ BioThane Collar - Brass Integrated Design
Fi Series 3/3+ BioThane Collar - Brass Integrated Design
black biothane collar with brass hardward to fit the Fi Series 3
Goldenrod yellow dog collar with Fi tracking unit on a white background with key features outlined
Collar size chart with size categories and fit ranges on a white background
Fi Series 3/3+ BioThane Collar - Brass Integrated Design
eight biothane color samples from the core collection - chili red, persimmon, flamingo, poppy, goldenrod, green apple, sage, & forest green
eight biothane color samples from the core collection - teal, ocean, blueberry, lavender, violet, plum, caramel, & black
eight biothane color samples from the seasonal color collection - red, coral, bluebird, granite, magenta, periwinkle, midnight & olive
graphic showing the options of the Fi Series 3 Biothane Collar Styles
Fi Series 3/3+ BioThane Collar - Brass Integrated Design

Fi Series 3/3+ BioThane Collar - Brass Integrated Design

$105.59

Classic brass design with Fi Series 3/3+ integration (unit sold separately).

Solid Brass Sport (Quick Release Buckle)

Additional Customization

Make mine two-tone

$14.08

Choose an accent colorChili Red
Limited Edition

Add a strap keeper

$8.80

Add a strap keeper

Adds a pop of color and keeps the tail end of the collar neatly in place.
Choose a color Chili Red
Limited Edition
Total: $105.59

WATERPROOF

STINK PROOF

EASY TO CLEAN

LIFETIME GUARANTEE

Fi Compatible BioThane Collar (Brass Integrated Design) - Sleek, Classic, and Made for Adventure

Adventure with peace of mind. Our Fi Compatible BioThane Collar is designed to integrate seamlessly with the Fi Series 3/3+ GPS tracking unit (sold separately), giving you real-time location data, activity insights, and unmatched durability in one sleek package.

Why you’ll love it:

  • Integrated design - Fi unit is built directly into the collar for a clean, streamlined look

  • Solid brass hardware - rust-proof, durable, and perfect for water-loving dogs

  • Made with genuine BioThane® - waterproof, stink-proof, lightweight, and easy to clean after any adventure

  • Custom design options - choose from single-color or bold two-tone designs (15+ color options)

  • Lifetime guarantee - backed for life against defects in materials or workmanship

The Fi Series 3/3+ unit offers extra-long battery life, GPS + satellite tracking, and health insights. This unit is sold separately at tryfi.com and is not included with the purchase of this collar. With this collar, you get a secure fit, no jingle, and total confidence that your pup is safe - wherever your adventures take you.

Please measure your dog's neck carefully before placing an order for a collar. Check out our collar sizing video for help. We're always happy to help with sizing and we're happy to make your collar in a custom length - just Contact Us! 

FEATURED PET GALLERY

Frequently Asked Questions

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.

Read Our Story

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