WHC-TECH Multicolor Wristband Bracelet Sport Armband with Metal Clasps Replacement Accessory for Fitbit Flex Activity and Sleep Tracker+1 Stand As a Gift,Random Color Free size fit your wrist depend on button site you place. Comfortable for sporting time,Look good no matter what you are wearing Silicon Fastener Ring - designed specially for fitbit flex to protect the clasp loose and band fall off Free size wristband accessory ,High quality and Replacement for lost or damaged Bands. NOTE:No Tracker or other parts! For Fitbit Flex Band only! Not for Fitbit one or other Models! Replacement Bands with Metal Clasps Only