Thefoldable food storage container is mainly made ofsilicone material, safe, hygienic, non-toxic.The foldable design for easy to store and carry. Features: [Support Microwave Heating]: It can be safely heated in a microwave oven, cold-resistant to -30 ℃, and heat-resistant to 230 ℃.Note: The cover of bento lunch box can't be put into heating. [Foldable Design]: The foldable design is easy to store and carry, saving more space, and the lid issealed to prevent leakage. [Buckle Design]: The buckle design to sealing well which isolates the odor effectively, prevents cross-flavor, and locks the freshness in place. [Soft and Safe Material]: Made of silicone material, the material is safe, hygienic, non-toxic, environmentally friendly, and durable. Specifications: Item: Foldable food storage container Main material: Plastic,silicone Optional color: Pink, blue, green Quantity: 4pcs Resistanttemperature:-30 ℃~230 ℃ Capacity:S: 350ml; M:500ml; L:800ml; XL:1200ml; Size: S: 13*6.5cm, height: 3cm(foldable) M: 15*6.5cm, height: 3cm(foldable) M: 17*7cm, height: 3.2cm(foldable) XL: 19*8cm, height: 3.5cm(foldable) Note: * There could be some deviations due to manual measurement or slight color difference owing to photographing condition. Thank you for your understanding. Package Information: Package Size:20*20*13cm Package Weight: 630g Plastic Package Packing List: 4* Foldable food storage container