Replacement Watch Strap Band for the Fitbit Alta Product Features: Materials: Soft Silicone, Stainless Steel Strap Type: Sports Metal Buckle, Two-Piece Strap Compatible Model: Alta Colors: 16+ Available Sizes: Small / Large Brand: Tech Accessor Comfortable, soft and durable, suitable for any activity Size Guide: Small & Large available Small: 13 - 17.5cm  Large: 15 - 20cm  Description: Soft, secure and the perfect accessory to your Ace or Alta tracker unit, we strive for 100% satisfaction and with our products you can be sure of a positive outcome. Pick from one of our vibrant colors and be sure to measure your wrist before purchasing to avoid any complications later on. Please note, no tracker is included with the sale of this item. Package Content: 1x Replacement Strap for Fitbit Alta