HAINENG Elasticity Antiskid 36CM Car Universal Ergonomics Pattern Silicone Steering Wheel Cover H-F07-B High Elasticity, Can be applied to 36-38 CM Diameter of the Steering Wheel Working Temperature: Performance in -40 - 230 Centigrade, High Quality / High Elasticity / Environmental Protection / Waterproof Rustproof Colorful Fashion Personality Car Decoration, Please do not use sharp object to cut the cup , and it just need water to clean it ( Direct water wash ). Silicone products have FDA Certification, Switzerland SGS Certification. Germany LFGB Certification We all porducts use Food-Grade Silicone, Non-Toxic / Tasteless / Harmless / Health / Environmental Protection / Safety