Garmin Vivofit Fastener Accessory Band Fastener for Garmin Vivofit Activity and Sleep Tracker Wristband Band Bracelet (Secure Your Wristband in Style, Fix Clasp Falling off, Personalize your Vivofit, Retail Gift Ready Package) Includes 8 Pcs/Pack O-Ring Silicon Fastener RAINBOW Pack. Skin Friendly. Allergen FREE. Skin Friendly. Allergen FREE. ONLY compatible with Garmin Vivofit activity and sleep tracker. Prevents wristband falling off in active sports. Perfect fit to your Vivofit. Personalizes and secures your Vivofit with colorful fasteners and clasps. Tracker and other accessories shown are not included. 30-day money back guarantee.