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All BioThane Products
Fi Series 3/3+ BioThane Collar - Sport Integrated Design
blue and yellow Biothane dog collar for the Fi Series 3 in the Sport Integrated Design
lime green Biothane dog collar for the Fi Series 3 in the Sport Integrated Design
Fi Series 3/3+ BioThane Collar - Sport Integrated Design
dark blue and coral Biothane dog collar for the Fi Series 3 in the Sport Integrated Design
blue and yellow Biothane dog collar for the Fi Series 3 in the Sport Integrated Design laying flat
Collar size chart with size categories and fit ranges on a white background
Unclipped sport collar with Fi tracking unit attached on white background and the key features outlined
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 Fi Series 3 BioThane Dog Collar Styles
Fi Series 3/3+ BioThane Collar - Sport Integrated Design
Bestseller

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

$101.54

Adventure-ready collar with quick release Duraflex® buckle and seamless Fi Series 3/3+ integration (unit sold separately).

Solid Brass Sport (Quick Release Buckle)

Make mine two-tone

$13.54

Choose an accent colorChili Red
Limited Edition

WATERPROOF

STINK PROOF

EASY TO CLEAN

LIFETIME GUARANTEE

The ultimate BioThane® dog collar designed for Fi Series 3 and 3+ GPS trackers. This premium BioThane® collar features an integrated design with sport hardware, seamlessly incorporating your Fi tracker into the collar. Fi tracker is not included and must be purchased separately through https://tryfi.com/. 

Our Fi Series Sport Integrated Collar is handcrafted with genuine BioThane® material and ultra secure Duraflex® quick release buckle hardware. The integrated design builds your Fi GPS tracker directly into the collar for a streamlined, low-profile look. Waterproof, stink-proof, and easy to clean, this collar is built to last through every adventure.

Why you'll love it:

  • Ultra secure Duraflex® quick release buckle
  • Integrated design specifically for Fi Series 3/3+ trackers
  • Streamlined, low-profile Fi tracker integration
  • Made from Genuine BioThane® – waterproof, stink-proof, and easy to clean
  • Available in multiple widths and sizes
  • Customizable with your choice of colors
  • Handmade in Oakland by our all-women team

Note: Size ranges are not universal and vary by collar product. It is extremely important that you carefully size your dog for a collar before purchasing. Incorrect collar sizing is the #1 reason for product returns. See our "Collar Sizing Demo" video for assistance. If you have any questions about collar sizing or need a custom size, please contact us.

Get the Perfect Fit 🐶

Collar sizing varies by product and is not universal. 

Incorrect sizing is the #1 reason for collar returns.

To ensure the best fit, carefully measure your dog's neck or existing collar. Our Collar Sizing Demo is located at the end of the product photos.

Questions about sizing or need a custom size? Contact us before placing your order.

Note sure which collar type to choose? Learn more about our full range of BioThane® dog collars.

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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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