Tkasing Replacement Silicone Bands for Fitbit Flex Only / Fitbit Band / Fitbit Flex Band / Fitbit Wristband / Fitbit Flex Wristband / Fitbit Bracelet (4E) Personalize your wristband to match your daily style with this brand new color choices Free size fit you wrist depend on button site you place,convenient for your exercise time Silicon fastener ring for free which tie up the band and protect your band from loosing Size:153mm - 210mm/ 6.02 inch - 8.27 inch All the pictures were took by myself,not the same with other sellers