USATREKKER&reg;&reg;&reg;&reg; Fitbit Flex Wristband Set of 3 2015 Style Colors Fitbit Flex Wireless Wristband/Bands (No Activity Tracker)/Sport Bracelet Interchangeable tracker so you can change colors to match your mood and wearing Choose the color that matches your daily style Large Size : approx. 162mm - 206mm (6.4'' - 8.1'') Small Size : approx. 142mm - 172mm (5.6'' - 6.8'') Material: TPE