Product Parameters: Material: Silicone + PP Color: Blue Size: 350ml: Folded size: 13.2 * 3 * 9.8 cm, Unfolded size: 13.2 * 6 * 9.8 cm 500ml: Folded size: 16.5 * 3 * 10.8 cm, Unfolded size: 16.5 * 10.8 * 6.5 cm 800ml: Folded size: 18.5 * 12.2 * 3.2 cm, Unfolded size: 18.5 * 12.2 * 7 cm 1200ml: Folded size: 21.8 * 13.8 * 3.2 cm, Unfolded size: 21.8 * 13.8 * 7 cm Quantity: 4 pieces Scope of delivery: 4 * Collapsible Lunch Box 1. 【Material Safety】: Containers are made of 100% food-grade PP and silicone: non-toxic and odor-resistant, environmentally friendly, BPA-free. Super smooth surface inside to avoid grease and very easy to clean. 2. 【Includes 4 containers: 13.2 * 3 * 9.8 cm (350 ml), 16.5 * 3 * 10.8 cm (500 ml), 18.5 * 12.2 * 3.2 cm (800 ml), 21.8 * 13.8 * 3.2 cm (1200 ml). 4 different sizes for a variety of situations, picnics, travel, work, etc. 3. 【Fantastic Design】: Lid with 4-way click lock, leak-proof silicone sealing ring. Small vent on top of each container for releasing water vapor. Allows for easy, compact storage, collapsing to 1/3 of its original size for easy storage, saving more than 60% space. 4. 【Safe Use: For microwaves, dishwashers and refrigerators. Applicable temperature is -40 ° C ~ 120 ° C. Open the vent if you heat it in the microwave and use heating time no more than 5 minutes. 5. 【Perfect 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 a perfect choice as a gift.