100% liquid silicone material Excellent quality and reasonable price Fashionable 1). This kind of silicone cup cover is made of food grade silicone approved by FDA, LFGB, SGS.2) Tasteless, flexible, nontoxic, anti-dust, non-stick, durable.3) Convenience to use and store.4).Temperature range:-40 to 230 centigrade.5) Various designs and colors available.