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BioThane gear turnaround time 3-10 business days Free US Shipping Over $85

Zoom purple and yellow biothane collar for Fi Series 3 with brass hardware
Zoom Fi Series 3/3+ BioThane Collar - Brass Layered Design
Zoom Fi Series 3/3+ BioThane Collar - Brass Layered Design
Zoom Fi Series 3/3+ BioThane Collar - Brass Layered Design
Zoom Fi Series 3/3+ BioThane Collar - Brass Layered Design
Zoom Fi Series 3/3+ BioThane Collar - Brass Layered Design
Zoom Fi Series 3/3+ Brass Layered Collar with key features outlined on a white background
Zoom Fi Series 3/3+ BioThane Collar - Brass Layered Design
Zoom eight biothane color samples from the core collection - chili red, persimmon, flamingo, poppy, goldenrod, green apple, sage, & forest green
Zoom eight biothane color samples from the core collection - teal, ocean, blueberry, lavender, violet, plum, caramel, & black
Zoom eight biothane color samples from the seasonal color collection - red, coral, bluebird, granite, magenta, periwinkle, midnight & olive
Zoom brindle colored dog wearing black and purple biothane dog collar for Fi Series 3 with brass hardware
Zoom graphic showing the available styles of Ft Series 3 BioThane Dog Collars

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

$60.00
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Fi Compatible BioThane Collar (Brass Layered Design) - Strong, Comfortable, and Built for Adventure

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

Why you’ll love it:

  • Layered design - Fi unit rests on top of the collar band (not directly on your dog’s neck) for comfort.

  • Solid brass hardware - classic, rust-resistant, and ideal for water-loving dogs

  • Premium BioThane® - waterproof, stink-proof, lightweight, and wipes clean after any outing

  • Custom style - 15+ colors, with optional accent colors for Fi end links and strap keeper

  • Lifetime guarantee - made to last and backed against material or workmanship defects

The Fi Series 3/3+ unit offers long-lasting battery life, GPS + satellite tracking, and fitness insights, so you can track every adventure with confidence. Purchase separately at tryfi.com.

Durable, customizable, and beach-friendly with brass hardware, this collar keeps your Fi secure while giving your pup comfort and style on every adventure.

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

$60.00

Customer Reviews

Based on 7 reviews
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Alyssa Lawlis (Riverside, US)
Best Collars!

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!

Thank you for taking the time to leave a review! We are thrilled to hear that our Fi Series 3 BioThane Collar exceeded your expectations. We strive to provide both durability and style for our furry friends. It's great to know that your dogs are loving their upgraded collars. Thank you for recommending us to others. Happy adventures!

O
Olivia Richards (Lansing, US)
10/10

Absolutely beautiful and sturdy. 10/10 recommend.

Thank you so much Olivia! (Thanks for the pic too!)