Fitian New Replacement Magnetic Silicone Clip Clasp Prefect for Fitbit Flex Bracelet Sports Activity and Sleep Monitor Wristband Strap (Black) Suit For Fitbit Flex ONLY, perfect to secure your daily activity and sleep tracker. Made of quality silicone, light and easy to install and carry around. The magnet can attach stronly to your jeans, shirt, bra and the like; also prevent your fitbit flex tracker monitor from missing. More convenient to do sports, like running, swimming, tennis, basketball and breaking etc . just attach it to your clothes or shoes as you like. Multi Color Options: Black red green orange dark blue pink cyan rose-carmine