Generic Replacement Wrist Band for Fitbit Flex with Secure Fasteners Sleeve and Metal Clasps Large Pack of 3 Latest replacement fitbit flex bands set with metal clasps for fitbit flex tracker Antibacterial Material, soft, waterproof rubber bands, excellent replacement for the origin bands Wristband Small Size: 5.5~6.9 inches, 140mm~176mm/ Large Size: 6.3~8.2 inches, 161mm~209mm Trademarked by GreenInsync: All products are exclusively sold by BeautiinShe 200+ Stylish fit bit wris tband to match your daily style with this brand new color choices!