Specification: Material: Food Grade Silicone Color: Pink Size: 350ml: 13 x 9.5 x 6.5 CM 500ml: 17 x 11 x 6 , 5 CM 800ml: 19 x 12 x 7.5 CM 1200ml: 22 x 14 x 7.5 CM Packing list: 4 * lunch box Contains 4 containers: 13 x 9 x 6 cm (350 ml), 17 x 11 x 6 cm (500 ml), 19 x 12 x 6 cm (800 ml), 22 x 14 x 7.5 cm (1200 ml). 4 different sizes for a variety of different situations, picnics, travel, work, etc. Ingenious design: lid with 4-way click lock, leak-proof silicone sealing ring. Small valve on the top of each container for the release of water vapor. Allows for easy, compact storage, collapses to 1/3 of its original size for easy, saving you more than 60% space. Safe to use: For microwaves, dishwashers and refrigerators. Applicable temperature is -40 C ~ 120 C. Open the outlet valve when heating it in the microwave and using heating time no more than 5 minutes. Ideal Food Storage: Perfect for storing food. Easy to assemble and carry, it is the best lunch partner for children, but also ideal for adults to develop healthy eating habits and an ideal choice as a gift.