YOUDirect Fitbit Replacement Bands for Fitbit Flex.! Small Fits Wrist 5.5"-6.8" -White Single Pack Personalize your wristband to match your daily style with this brand new color choices. Made of Sillion and lightweight. It's a Adjustable size wristband accessory. COMFORTABLE TO WEAR: Comfortable for sporting time. Size:140mm-176mm NOTE: No tracker or other parts!!! Replacement Rubber Band and Clasp Only!!!!