... ,temp. resistant from -40 to +230 1) Silicone ice cube box With high quality food grade silicone materials , FDA&SGS certificate ... range from -40 to 220 centigrade. (3) Tasteless, Nontoxic, Anti-dust, non-sticking, impermeable,easy to wash. (4) Safe to use ... highly welcome. (8) OEM orders are welcome. Silicone ice cube box