... Folding Lunch Boxes is Made of 100% Silicone Rubber Material, It's Eco-friendly, Soft, Flexible, Non-toxic ... container Materials100% High Quality FDA/ROHS/SGS Mixed Silicone Rubber Material , Eco-friendly, Harmless, Non-toxic, FlexiblenessColorWhite ... Meet Your Need.Manufacture Process:1. Silicone Injection Machine, Silicone Rubber Kneader Machine2. Machine: CNC Turning, Milling, Drilling, Grinding3. ...