Features: 1. Compatibility: This strap is made of safe, eco friendly, breathable, high quality silicone material, compatible for BIOCERAMIC replacement strap. 2. Safer clasp: The clasp is made of high quality material, it will not fade even after swimming or soaking in water for a long time. Enjoy your sports moments. 3. Comfortable to wear: The wrist design is ergonomic, strong and durable, soft and moderately soft, comfortable to wear, suitable for the wrist circumference. (Min: 5.6inch Maximum: 8.5inch) 4. High quality: This strap is wear resistant, high temperature resistant, non deformed, non toxic, odorless, soft, non cracking, and non irritating to the skin. 5. Unique design: Design football, fashion, sports, it is the best choice for your outdoor sports, multi color optional. specification:Material: Silicone Applicable models: compatible for BIOCERAMIC PackageList:1 Pcs Strap NoteDue to the lighting effects and shooting angles, there is color difference in the product, please understand. Due to manual measurement, there is a tolerance in the product size.