Replacement Bands for Fitbit Flex,Nicpay 2PCS Large Size Silicone Wristband Accessory with Clasp for Fitbit Flex Bracelet Multi Color Sport Arm Band No Tracker- Black and White Designed for fitbit flex only.Premium Silicone material make you feel more comfortable Adjustable clasp, elastic band, one size fits most wrist. Inner perimeter 5.5"-7.5" The holllowed design is more beathable for your wrist,avoid heat rash on your wrist in summer 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 Rubber Bands with Clasps Only