*Please note, these collars do not include the actual Fi Smart Dog Activity Tracker and will not work as a collar without one. Buy your Fi Smart Dog Tracker here The Fi Tracker is perfect for active pups and we make stylish collars that pair perfectly with it. Every Fi Dog Collar Band comes equipped with genuine Fi end-links. Our collars are made with ultra-durable 1” poly-cotton webbing and genuine military-spec acetal plastic Duraflex™ buckles. Choose between solid brass and stainless steel hardware. All you have to do is attach your tracker and you're ready to go! Handcrafted in Austin, Texas. Characteristics: Dries quickly Incredibly strong, lightweight and comfortable (breaking strength 500+ lbs.) Stretch-resistant Shrink-resistant Fade-resistant Mildew-resistant which means it’s stink-resistant. Easy to clean Soft to the touch Not sure what size you need?  Our fit guide can help! Recommended Cleaning: Detach Fi Smart GPS tracking device from collar bands. Place collar bands in an old sock and toss them into the washing machine. Air dry. We DO NOT recommend you dry in the dryer. For deeper cleaning, hand wash using a little bit of dishwashing soap and a soap brush. Work soap into a lather and lightly scrub both sides of the collar until clean. Rinse completely under cold water and lay on the counter to air dry. The colors will be bright again. Just like new!