China Factory Custom Wholesale Hot Newest High Quality Reusable Silicone Coffee Cup Sleeve,Silicone Glass Bottle Sleeve Material100% food grade silicone. ... wash available. As heat-resistance -40 to 230 degrees.3. Reasonable price and high quality.Factory direct manufacturing.4. OEM design ... end..Application:silicone sleeve can be used for the bottle ,glass,cup.use on the hand grip,on the machine , ...