Techion Protective Silicone Fasteners Ring Holder for Fitbit Flex/Fitbit Alta/Garmin Vivofit/Samsung Gear fit Wristband/Fitbit Charge Wristband(20 pcs/Pack) Designed specially for Fitbit Flex and Fitbit Alta to protect the clasp loose and band fall off Perfect fit for your Fitbit Flex and Fitbit Alta activity tracker and comfortable wearing experience Easy to use, Slide the loop over the clasp when you put on your wristband as the picture showed Comfortable and durable to wear Optional 10 colors: black, white, green, yellow, orange, blue, light blue, red, pink and purple,2pc/color