1、Made of food grade silicone and environmentally friendly materials, it is BPA-free, non-toxic, tasteless and safe to use. 2、It can be fully folded to 1/3 of the original size when not in use, and all sizes can be stacked together. 3、It is not easily deformed or melted and can be used in refrigerators, microwave ovens, and dishwashers. 4、When used in a microwave oven, the clip lock covers food safety and an air valve on the lid serves as an option for the vent. 5、Easy to clean, lightweight and portable. Ideal for food storage, easy to carry to the office, camping, hiking, picnics, etc. Features: Made of food grade silicone and environmentally friendly materials, it is BPA-free, non-toxic, tasteless and safe to use. It can be fully folded to 1/3 of the original size when not in use, and all sizes can be stacked together. It is not easily deformed or melted and can be used in refrigerators, microwave ovens, and dishwashers. When used in a microwave oven, the clip lock covers food safety and an air valve on the lid serves as an option for the vent. Easy to clean, lightweight and portable. Ideal for food storage, easy to carry to the office, camping, hiking, picnics, etc. Specification: Condition: 100% Brand New Item Type: Lunch Box Material: Food Grade Silicone Optional Colors: Red, Dark Blue Capacity: 1200ml Working Temperature: - 40 ℃ - 240 ℃ Size: Approx. 21.5 x 13.5 x 3cm / 8.5 x 5.3 x 1.2inch Folded Height: Approx. 3cm / 1.2inch Weight: Approx. 258g / 9.1oz Package list: 1 x Lunch Box