"Fitbit Alta Bands Leather Alta HR Bands Adjustable Replacement Sport Strap Band for Fitbit Alta HR AccessorySATISFACTION GUARANTEE: If you are not satisfied with us, we provide no qustion-asked refund or replacement.Size - Fits 5.5-8.1 inch wristWaterproof Function - POY Fitbit Alta HR / Fitbit Alta wristbands are made from 2 layers of material: Top layer is genuine leather and bottom layer is soft TPU, which make the bands be more flexbile, sweat resistant and durable.Secure & Seamless Fit - The POY replacement bands for Fitbit Alta / Fitbit Alta HR is with Metal Clasps on both ends, which locks onto the watch interface precisely and securely - No Worry to fall off. Package Included: 1* Fibit Alta Accessory replacement leather bands ONLY. Do not contain any device/tracker."