Includes 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 to meet a variety of different situations, picnics, travel, work, etc.Ingenious design: lid with 4-way click closure, leak-proof silicone sealing ring. Small valve on top of each canister for water vapor release. Allows for easy, compact storage, folds down to 1/3 its original size for easy storage, saving you more than 60% space.Safe Use: For microwave, dishwasher and refrigerator use. Applicable temperature is -40~120 Open the outlet valve when heating it in microwave and using heating time no more than 5 minutes.IDEAL FOOD STORAGE: Perfect for food storage. 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.