A useful accessory band designed for wearing your fitbit watch band around large wrist or ankle. Just hook on your watch band and it will extend your band from small to large or x-large. With our extender bands, you can easily "create" a larger watch band, if you like, you can put your fitbit watch band around your ankle and track more accurate steps when cycling or running on a treadmill. The package only include 3 pieces extender bands, it does not include any watch band, we kindly suggest you to use the extender bands on your original watch band and they will works perfect!