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Fi Series 3 inline buckle collar in ocean blue and lime green BioThane® — waterproof dog collar with integrated Fi GPS module
Fi Series 3 inline buckle collar in ocean blue and lime green BioThane® — waterproof dog collar with integrated Fi GPS module and product information
Two-tone blue and lime green fi inline dog collar with black buckle on a white background
Fi compatible inline buckle collar on a dark surface with water droplets with product callouts
Two-tone Ocean Blue and Lime fi-compatible dog collar with a black buckle. The collar is 1 inch wide and features accent pieces and a strap keeper in lime green. The primary color is ocean blue.
Yellow BioThane® Fi Series 3/3+ inline collar showing Fi device attachment — flat lay — Vivid Canine
Yellow BioThane® Fi Series 3/3+ inline collar in 1" width showing buckle hardware — flat lay — Vivid Canine
Yellow BioThane® Fi Series 3/3+ inline collar open showing both ends — flat lay — Vivid Canine
Magenta and black BioThane® Fi Series 3/3+ inline collar showing Fi device attachment — flat lay — Vivid Canine
Magenta and black BioThane® Fi Series 3/3+ inline collar in 3/4" width showing buckle hardware — flat lay — Vivid Canine
Dusty turquoise and purple two-tone BioThane® Fi Series 3/3+ inline collar showing Fi device attachment — flat lay — Vivid Canine
Dusty turquoise and purple two-tone BioThane® Fi Series 3/3+ inline collar in 3/4" width showing buckle hardware — flat lay — Vivid Canine
Two-tone Dusty Turquoise fi-compatible dog collar with a nickel-plated buckle. The collar is 3/4 inch wide and features a strap keeper in dusty turquoise.
Yellow 1-inch and magenta black 3/4-inch BioThane® Fi Series 3/3+ inline collars showing buckle side and opposite side — flat lay — Vivid Canine
Biothane fi compatible inline buckle collar size comparison showing 3/4" and 1" width collars
BioThane comparison chart showing waterproof, easy to clean, and odor-proof benefits
Vivid Canine Waterproof BioThane® buckle dog collar sizing guide for BioThane® Gear
BioThane Fi buckle collar size guide chart
Vivid Canine BioThane® color chart showing all available color options for BioThane® Gear
Vivid Canine BioThane® color chart showing all available color options for BioThane® Gear
Vivid Canine production and shipping information for BioThane® Gear

Fi Series 3/3+ Compatible - BioThane® Waterproof Inline Buckle Collar

Regular price $55.00 USD
Shipping calculated at checkout.

FREE SHIPPING on orders $60+ (USA)
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Loved by Dogs. Trusted by Owners.

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Find the Right Fit for Your Dog

Collar Width
3/4"
Hardware Finish
Solid Brass

The Fi Series 3/3+ Compatible BioThane® Waterproof Inline Buckle Collar is ideal for adventurous dogs. Now you can enjoy the waterproof, easy-to-clean benefits of BioThane® with your Fi device!

Why Choose This Collar:

  • Streamlined Inline Design - The Fi Series 3/3+ device attaches directly inline on the collar via Fi links
  • Solid or Two-Tone Colors – Choose a single color for a clean look, or mix your collar color with a different Fi link color for a custom combination
  • Fi Link hardware: Genuine Fi links available in Matte Black

Perfect for GPS Dog Tracking:

Our inline collar design is built specifically for Fi Series 3 or 3+ compatibility, using Fi links to attach your device directly to the collar band.

Crafted with Care in the USA

Our products are crafted for durability and everyday adventure using genuine BioThane®. They should be matched to your dog's size and activity level. They are not rated to specific pull or load thresholds, so selecting the right product for your dog is essential.

Gear Up for Every Adventure.

Fi device sold separately. Use code VIVID20 to save $20 off your Fi Series 3/3+ activation at www.tryfi.com

• Genuine Beta 520 Standard BioThane®

• Machine riveted

• Matching Strap Keeper - Attached to collar

• Solid brass, Matte black, or Nickel-plated hardware


Due to lighting and monitor differences, actual colors may vary slightly from what appears online.

We recommend washing your BioThane® gear by hand with mild soap and water, and then drying it with a soft cloth. Please keep in mind that brass hardware will naturally tarnish (develop a patina) over time; regularly polishing or cleaning the hardware will help minimize this process. Our nickel-plated, chrome-plated, and matte black hardware may show wear and tear over time; however, this is normal and does not compromise the hardware's integrity. To clean your hardware, we recommend washing it with mild soap and water, then drying it with a soft cloth.

Important Note: Please ensure that all hardware is thoroughly dried after use in any water, especially salt water. This will help to prevent the hardware from rusting.
While BioThane® is incredibly versatile and repels most dirt and grime, please note that it is not completely stain-proof in all circumstances. Regular cleaning is recommended to keep your BioThane® gear looking new.

Not all BioThane® is created equal; we use only Genuine BioThane® on every leash and collar we make.

BioThane® is a polymer-coated webbing that performs like leather without the drawbacks. It's waterproof, won't mold or mildew, and resists most common pet and outdoor odors. A quick rinse is all it takes to clean. BioThane® is manufactured in the USA.

While BioThane® repels most dirt and grime, it is not completely stain-proof in all circumstances. Regular cleaning with mild soap and water will keep your gear looking its best.

Fi Series 3/3+ Compatible - BioThane® Waterproof Inline Buckle Collar

$55.00 USD
⚠️ Fi 3/3+ GPS device sold separately. Use code VIVID20 to save $20 on Fi Series 3/3+ activation at tryfi.com

Need a Fi 3+ GPS? Shop our Fi 3+ GPS Sets — collar + Fi device + subscription bundled together.

Fi tracks the adventure. Vivid Canine is built for it.

Why Vivid Canine & Fi?

Fi tracks every adventure — Vivid Canine gear is built to handle them. We use only Genuine BioThane®, a USA-made, polymer-coated webbing that's waterproof, durable, and easy to clean. It rinses off in seconds and resists most common pet and outdoor odors. Our collars and leashes are handcrafted in the USA to work seamlessly with the Fi Series 3/3+ GPS tracker — tough enough for every trail, swim, and muddy romp.

BioThane® Collars FAQ

Will this collar work with my Fi Series 3/3+ tracker?

Yes, this collar is specifically designed to be compatible with the Fi Series 3 and Series 3+ GPS tracker. The Fi links are sized to fit the Fi band securely so your tracker stays in place on every adventure.

Do I need to remove the collar to charge my Fi tracker?

It depends on your collar style. With our buckle and quick-release collars, simply remove the Fi tracker to charge it, or remove the collar entirely — whichever you prefer. With our inline collar, remove the collar and place it directly on the Fi charger.



Does BioThane interfere with the Fi GPS signal?

No, BioThane® is a non-metallic material and does not interfere with your Fi tracker's GPS or cellular signal. Your tracker will perform exactly as intended.

Which hardware finish should I choose?

Solid Brass stays looking like new with regular cleaning. Silver (Nickel-Plated) and Matte Black (Zinc Alloy) buckles are plated finishes that stay sharp with minimal upkeep. Nickel-Plated and Matte Black buckles are lighter weight. Heavy use on plated finishes may affect appearance over time, but won't impact performance. Rinse and dry all hardware thoroughly after any exposure to water.

Are BioThane collars waterproof?

Yes, 100% waterproof. Won't absorb water, perfect for water adventures. Just rinse and wipe dry.


How do I find the right size?

Measure your dog's neck at the base with a flexible tape. You should be able to slip 1–2 fingers comfortably between the collar and your dog's neck. If your dog is between sizes, size up. For buckle collars, choose a range where your measurement falls near the middle. Not sure? Visit our Size Guide for help choosing the right size, or email us at info@vividcanine.com before placing your order.





Do I need to condition BioThane?

No conditioning needed. The material stays flexible without any special treatments.

The Vivid Canine Difference

Genuine BioThane®

Waterproof. Easy to clean. Adventure-ready.

Built to Last

Durable products for active dogs.

Lifetime Guarantee

We stand behind every product.

Made in the USA

Crafted with care, built to last.

Gear Up: Collar to Leash

Complete the Set