Baaletc (TM) Cute Replacement Wristband Bracelet For Fitbit Flex / Wireless Activity and Sleep Tracker Accessory Band with Clasp + Silicone Fastener Ring (Teal, Small) Replacement band for Fitbit Fitness Tracker, fit snugly and perfect high quality plastic well made, flexible and durable Large size:6.3~8.3 Inches / 161~210 mm; Small size:5.5~6.9 Inches / 140~176 mm Fitbit tracker or other parts are not include in the pack NOTE: the bands are registered in USPTO with brand "Baaletc" (S/N: 87051173), it's not fitbit original band