Two-Toned BioThane® Collars tapered 1.5" width The Series 3+ will still

The Series 3+ will still work with the overlay design for GPS tracking and fitness

Send us an email to request a specific length

To prevent over-tightening our limited slip design will limit the collar's reduction in size by 4" (3" for the smaller neck sizes)

These martingale collars include authentic Fi end-links to attach to your Fi 3/3+ tracker

Two-Toned BioThane® Collars tapered 1.5" width The Series 3+ will stillTake your dog on any adventure with confidence, thanks to BioThane. Whether your dog loves to swim, hike, surf, or play in the mud, our BioThane gear is designed to keep up with your dog's active lifestyle. With a range of colors to choose from, you can find the perfect collar to match your dog's personality. Constructed with authentic beta BioThane in either 5 8", 3 4", 1" or 1. 5" width 100% waterproof, anti microbial, & durable making them perfect