D-ROAD 10PCS Black Silicon Fastener Ring for Garmin Vivofit to Fix the Band Clasp Fall off Problem Designed specially for Garmin Vivofit to protect the clasp loose and band fall off This simple insurance will keep your Garmin Vivofit safe. Light weight and more flexible Slide the ring over the clasp when you put on your wristband,simple as that The size of the silicone rings have been specially designed to fit the Garmin Vivofit Note:tracker or wristband not included.Only Silicon Fastener Ring for Garmin Vivofit