Ldaai Replacement Bands for Fitbit Flex, Fashion Adjustable Silicone Sport Wristband with Chrome Clasp and Fastener Buckle, Prevent Tracker Falling Off (No Tracker) Free size fit your wrist depend on button site you place. Comfortable for sporting time,Look good no matter what you are wearing Personalize your wristband to match your daily style with this brand new color choices Free size wristband accessory ,High quality and Replacement for lost or damaged Bands ADJUSTABLE SECURE WRISTBAND DESIGN -- One size fits most wrists (Fits 5.5"- 8.25" wrist), very convenient and comfortable wearing experience NOTE:No Tracker or other parts! For Fitbit Flex Band only! Not for Fitbit one or other Models! Replacement Rubber Bands with Clasps Only