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

$103.94

Unit price: per

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

Quantity

Total: $103.94

WATERPROOF

STINK PROOF

EASY TO CLEAN

LIFETIME GUARANTEE

DESCRIPTION

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

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

Why you’ll love it:

Integrated design - Fi unit is built directly into the collar for a sleek, low-profile look and easy charging
Solid brass hardware - rust-proof, durable, and perfect for water-loving dogs
Premium BioThane® - waterproof, stink-proof, lightweight, and wipes clean in seconds
Custom style - 15+ colors in single-color or two-tone designs, plus optional keeper strap for a polished look
Lifetime guarantee - crafted to last and backed for life against defects

The Fi Series 3/3+ unit (available at tryfi.com) offers GPS + satellite tracking, extra-long battery life, and fitness and sleep insights - giving you total confidence that your pup is safe and accounted for, no matter where 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!

SHIPPING & RETURNS

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Frequently Asked Questions

Collar sizing is not universal. Different collars we offer have different size range options due to the built in hardware. It is ESSENTIAL that you measure your dog for a collar before placing your order, and read the size chart carefully.

To size your dog for a collar, use a string or a soft tape measure around your dog’s neck where the collar will sit. Add two fingers of breathing room. Choose the size where your dog’s measurement is close to the middle of the size range.

If you have any questions or need a custom collar size, please contact us.

Check out our Collar sizing demo here

BioThane® is hypoallergenic and does not absorb dirt or odor, making it a great choice for dogs with sensitive skin. However, every dog and coat type is unique. In some cases, any collar material can contribute to irritation or matting, especially if it’s worn too tightly, left on when wet, or not checked regularly. We recommend inspecting your dog’s neck frequently and ensuring their collar fits comfortably (snug but not tight, with room for two fingers between collar and neck).

We offer two styles of Fi Series 3/3+ Compatible Collars; an Integrated and a Layered design. The Fi tracking unit is not included and must be purchased separately from Fi.

The Fi unit can be taken on and off by opening the magnetic tab at the back of the Fi end link and sliding the unit off or on the metal track.

The Integrated Design is more lightweight and low profile, while the Layered Design may be preferred if you would not like the metal Fi Unit to be in contact with your dog’s neck. The Integrated Design is easier to charge while remaining on the collar, and may provide a slightly better GPS signal due to its direct contact with your dog.

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.

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