Xiaomax Replacement Silicone Security Loop Fastener Protector Ring for Fitbit Flex / Garmin Vivofit / Samsung Galaxy Gear Fit SM-R350 Wireless Activity Bracelet Sport Wristband (12 Pack) Protect the Band From Falling Off and Fix the Clasp Loose Problem,never Worry About Losing Your Loved Sport Band This simple and functional insurance will keep your Fitbit flex band safe. ONLY FITS FITBIT flex: The size of the silicone rings have been specially designed to fit the Fitbit flex. It does NOT fit other activity trackers or wristbands. 12 PACK (10 COLORS): black (3 pcs), white, green, yellow, orange, blue, light blue, red, pink and purple. Multiple Colors: One loop can already keep your wristband safe, you can add more bands for a splash of colors on your wrist. With the multiple colors you can try millions of ways to vary the looks of your wristband Easy to use:Just slide the ring over the clasp when you put on your wristband.