【WIDE USE】: The collapsible silicone lunch box is perfect for indoor food storage, such as home, bar, restaurant; Also outdoor activities, such as work, school, picnic, business, camping, hiking, travelling, etc. Microwave, oven, freezer and dishwasher safe. Portable foldable lunch box, light enough to carry anywhere. 【Airtight and Leakproof】With an air valve on the lid, the lunch box can be kept under vacuum at all times, allowing food to stay fresh longer and prevent spills. water leaks. With 4 different sizes and colors, our collapsible food containers will be perfect for transporting food and fruit, work, day trips, picnics, camping, hiking or traveling and more. 【BPA Free & Easy to Clean】Made of food grade silicone, our collapsible food storage containers are BPA free, FDA approved, non-toxic and tasteless, 100% eco-friendly. The non-stick property can effectively prevent grease from adhering to the inside of collapsible silicone containers, very easy to clean, no need to repeat cleaning. 【VALVE DESIGN】: Hot gas can discharge and water vapor will not form in the lunch box. Therefore not suitable for liquids, such as water and soup, which may leak from the valve. and when using a microwave oven, the breathable valve should be pulled up. 【SAVE SPACE】: Foldable design, save more than 60% space for you. No more cluttered Tupperware cabinets Silicone storage containers are easy to store and save a lot of space. Past microwave, freezer and dishwasher safe. Can be folded to 3cm thick when not in use, saving storage space, or can be used as a dish, changing shape.