FlyHi Replacement Bands for Fitbit Flex, Fashion Hollowed Design, Comfortable Adjustable Silicone Sport Wristband with Metal Clasp, Prevent Tracker Falling Off(Trackers not Included)(Black+Light Gray) FlyHi Replacement Bands for Fitbit Flex Only. Note: Don't forget that the Hollowed Band's size can be adjusted according to your wrist 's size (Shown as picture 2 ) ! Adjustable Size Design Fits Most Wrists(153mm-210mm/6.02"- 8.27"), It is of great convenience to move the adjustable bar clasp to the size that fits your wrist. Once it is sized, it is easy to hook the bar on the clasp. 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. 12 Months Warranty and Provide Friendly, Easy-to-Reach Support.