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All BioThane Products
blue and green apple biothane collar for the Fi Series 3 Sport Layered Design on white background
Purple and poppy biothane dog collar for the Fi Series 3 in our sport layered design
Purple and poppy biothane dog collar for the Fi Series 3 in our sport layered design laying flat
teal and plum biothane dog collar for the Fi Series 3 in our sport layered design laying flat
blue and green apple biothane collar for the Fi Series 3 Sport Layered Design on white background laying flat
Purple and poppy biothane dog collar for the Fi Series 3 in our sport layered design
teal biothane dog collar for the Fi Series 3 in Sport Layered Design
Fi Series 3/3+ Sport Layered Collar in Blueberry and Green Apple BioThane on a white background with key product features outlined
Collar size chart with size categories and fit ranges on a white background
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 available styles of the Biothane Collar for the Fi Series 3
close up of grey dog outside wearing the Fi Series 3 BioThane Collar - Sport Layered Design
close up of grey dog outside wearing the Fi Series 3 BioThane Collar - Sport Layered Design
tan dog wearing a purple and brown Fi Series 3 BioThane Dog Collar in Sport Layered Design
tan dog wearing a teal and green apple colored Fi Series 3 BioThane Dog Collar in Sport Layered Design
tan dog wearing a teal and pink Fi Series 3 BioThane Dog Collar in Sport Layered Design
blue and green apple biothane collar for the Fi Series 3 Sport Layered Design on white background
Bestseller

Fi Series 3/3+ BioThane Collar - Sport Layered Design

$105.24

Rugged layered sport style that pairs Fi security with lightweight durability (unit sold separately).

Solid Brass Sport (Quick Release Buckle)
Choose layered end link accent color

The end link accent pieces hold the Fi Unit end links in place and add a pop of color to your collar. Example shown is sport; brass collars will have brass hardware.
Choose layered end link accent color

The end link accent pieces hold the Fi Unit end links in place and add a pop of color to your collar. Example shown is sport; brass collars will have brass hardware.

WATERPROOF

STINK PROOF

EASY TO CLEAN

LIFETIME GUARANTEE

Fi Compatible BioThane Collar - Rugged, Lightweight, and Adventure-Ready

Adventure with total peace of mind with our waterproof, stink proof, easy to clean Fi Compatible Sport Collar (Layered Design). 

Our Fi Compatible Sport Collar is handcrafted from BioThane® and built to integrate seamlessly with the Fi Series 3/3+ GPS tracking unit (sold separately), giving you real-time location data, activity tracking, and unmatched durability in one sleek package.

The Layered Design keeps the Fi unit resting on top of the collar band rather than directly against your dog’s neck, offering a streamlined fit and added comfort.

Why you'll love it:

  • Strong Duraflex® - quick-release buckle - sleek, lightweight, and secure, comfortable for everyday wear

  • Layered design - Fi unit sits on top of the collar band (rather than directly against your dog’s neck, offering a streamlined fit and added comfort.)

  • Made with genuine BioThane® - waterproof, stink-proof, flexible, and wipes clean in seconds

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

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

The Fi Series 3/3+ unit offers extra-long battery life, provides GPS + satellite tracking, fitness 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.

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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