Silicone folding up cup 1,100% food grade silicone with FDA,SGS and LFGB approvals. 2,temperature range:-40 ... to 280 Certigrad. 1,100% food grade silicone with FDA,SGS and LFGB approvals.2,temperature range:-40 ... staining.8,Non-stick,easy to remove and clean.9,Flexible,lightweight and portable,easy to store and transport.10,Durable ...