Greeninsync Holder Case for Fitbit Flex, Carry Your Active/Sleep Tracker in Your Key Chain and Necklace 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!