bayite Silicone Bands Compatible Fitbit Alta and Alta HR, Pack of 10 Replacement Soft and Smooth Silicone Watch Band for Fitbit Alta. Fitbit alta HR requires a perfect fit on wrist to monitor heart rate. So we don't suggest that you buy unadjustable band for your alta HR Available in Large and Small size: L size for 6.7" - 8.1" wrist, S size for 5.5" - 6.7" wrist The band comes with a metal buckle and a clear Fastener. The Fitbit Alta Tracker is not included 10 Colors included: Black,Fuchsia,Blue Gray,White,Lavender,Plum,Light Pink,Teal,Brown,Navy WARRANTY: 1 year hassle free exchange without return. bayite is registered trademark in U.S. Bayite is the exclusive seller on amazon. The bands from other sellers in this listing are UNLAWFUL REPRODUCTION WITHOUT GUARANTEED BAYITE QUALITY. We only stand behind genuine bayite product. If you receive poor quality product from OTHER SELLER, please report countfeit to amazon and get your money back without return.