Add style and color to your wrist while tracking sleep and daily activities with these charming Smart Buddie Fashion Activity Tracker Bands. They are made of high-quality TPE material and are specifically designed to be interchanged with the Fitbit Flex wireless activity and sleep tracker. This Smart Buddie bands and charger combo pack includes three replacement bands in translucent orchid, a black and white heart print and translucent lime to match many outfits and occasions. They are appropriate for day or night, work, the gym or for simply adding a touch of fashion and color to an outfit. They are available in a variety of colors and prints to suit personal needs and taste. These small Smart Buddie tracker bands have three clasps that provide secure closure. The Fitbit Flex tracker is sold separately.