*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.