Teak Fitbit Flex Band, Replacement Bands for The Fitbit Flex, with Extra Security Clasp. Large & Small HIGH QUALITY and COMFORTABLE FITBIT FLEX BAND: Soft but durable medical grad Silicone band, backed by Teaks amazing service and product guarantee. If you ever have an issue with your Teak band, dont worry, we will take care of you. EXTRA PROTECTION FOR YOUR FITBIT: Free extra security clasp included with every band to keep your band from falling off. STYLISH VARIETY: Tons of colors and sizes to fit your mood, style, or personality. WORKS FOR DAILY and NIGHTLY USE: Teak flex bands can to be worn during fitness activities or while sleeping. They are also a fantastic wrist accessory with any outfit. TOUGH: "More Durable than the original!" - actual customer quote Weight lifting Running Hiking Biking Sports Rock climbing Crossfit Pilates Yoga Work Sleep Whatever activity you do!