RedTaro Replacement Bands Compatible with Fitbit Flex/Wireless Activity Bracelet Sport Wristband(No Tracker, Replacement Bands Only) SECURE BUCKLE CLOSURE: This fitbit flex band has a buckle and strap holder, securing your Fitbit on your wrists. Free worry the Fitbit Flex falling off problem! DURABLE FLEXIBLE TPU MATERIAL: Perfect fit and comfortable to wear,giving you silky soft & smooth feeling. ADJUSTABLE SIZE: Free size band by adjusting chrome clasp,large/small size for you to choose. Just stick and lock your watch band easily. Small size5.5"-6.7" large size 6.7"-8.1" . STYLELISH DESIGN: Match your daily style. Different colors or style fo f your outfits and mood, enhance your taste. RedTaro SERVICE365 days quality guarantee, 30-day no question return and 24 hours message reply.