Non-toxic, odorless, and safe to use. High temperature resistant, can be used in refrigerators, microwave ovens and dishwashers. It can be fully folded up to a third of the original size when not in use, and different sizes of lunch boxes can be stack together. When used in the microwave oven, the clip lock covers food safety and the air valve on the cap acts as a ventilation. Easy to clean, light weight and portable. Perfect For Food Storage, Easy To Carry To Office, Camping, Walking, Picnics, Etc. Pink Color Material: Food Silicone Capacity: 350 Ml 13 * 5.5 * 9.5 CM; 500 Ml 16 * 5.5 * 10 CM; 800 Ml 18 * 6 * 12 CM; 1200 Ml 21 * 6.5 * 13.5 CM; Package Contents: 4 * Lunch Box.