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Fi Compatible BioThane Collars

Adventure-ready and fully customizable, our Fi Series 3 compatible BioThane collars are durable, stink proof, and easy to clean (Fi unit not included).

✔ Two Designs - Layered (unit sits on top) or Integrated (built into the band).
✔ Custom Fit - 3/4" or 1" widths, 15+ colors, single or two tone color options.
✔ Hardware Choices  - Brass for a classic look or Sport (quick-release buckle) for convenience.
✔ Gentle & Secure - soft, antimicrobial BioThane helps prevent irritation and matting.

4 Results

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
Bestseller

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

(20)
from $104.43
Unit price
per 
(20)
18 colors • 4 sizes
  • +9 colors
  • 13-15"
  • 15-17"
  • 17-20"
  • 20-25"
+13 colors
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
Bestseller

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

(17)
from $104.43
Unit price
per 
(17)
18 colors • 4 sizes
  • +9 colors
  • 13-15"
  • 15-17"
  • 17-20"
  • 20-25"
+13 colors

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

(7)
from $104.43
Unit price
per 
(7)
18 colors • 4 sizes
  • +9 colors
  • Small (9-12")
  • Medium (12-16")
  • Large (15-20")
  • Extra Large (20-25")
+13 colors

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

(7)
from $104.43
Unit price
per 
(7)
18 colors • 4 sizes
  • +9 colors
  • Small (9-12")
  • Medium (12-16")
  • Large (15-20")
  • Extra Large (20-25")
+13 colors

1000+ FIVE STAR REVIEWS

This collar, like everything else we have from HTH, is sturdy, easy to clean, and looks absolutely beautiful on my pup. We’ve worn it hiking, dock diving, and for our everyday trips out and about, and it has held up wonderfully. Another great piece of gear from an awesome brand!

– ERIN L.

Love these collars! My Boykins swim everyday and these collars are the best. Dry quickly and never ever smell!

– PAM

This collar is super durable, easy to clean, and has vibrant colors! I love how sturdy it is and the embedded tag is so much better than a usual hanging tag.

– EMMA

I was looking to upgrade my dogs’ original Fi collars and boy did I. They’re beautiful and turned out exactly like I imagined. Also super durable and easy to clean-both requirements for my high energy/maximum chaos mixed breeds. Highly recommend!

– ALYSSA L.

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