Specifications: Material: silicone gel Compatible model: Fitbit Blaze (NO Metal Frame) Two sizes : Two sizes for you to choose,Free Adjustable length Feature: 100% new, high quality. Moderate softness, comfortable to wear. The size can be adjusted freely according to the individual wrist. Easy to assemble without tools, perfect fit, no gap! The same design as the original does not need tools to disassemble! This factory USES the material for the brand-new raw material, the quality is high, the supply is stable, please rest assured purchases! Package Include:1*Sport Silicone Wristband For Fitbit blaze Smart watch(Does not include watches)