PREMIUM QUALITY & SAFE MATERIAL: The collapsible silicone lunch box is made of high-quality food-grade BPA-free silicone, which is non-toxic, tasteless, and odorless, meeting FDA standards. With airtight plastic lids, it is safe for use by adults and children. These foldable food storage containers are microwave safe, freezer safe, and dishwasher safe. SET OF SILICONE FOOD CONTAINERS: This 4-piece set includes collapsible food storage containers with capacities of 1200ml, 800ml, 500ml, and 350ml, designed to meet various storage needs. Ideal for kids' lunches, leftovers, takeout, or meal prep. These silicone containers help keep cereal, fruits, vegetables, and other foods fresh. CONVENIENCE AND SPACE SAVING: The silicone food containers can be folded to one-third of their original size, saving up to 60% of storage space. This makes them ideal for organizing kitchen cabinets and compact storage. Lightweight and easy to carry, they are a convenient alternative to heavy glass containers. Suitable for camping and other on-the-go uses. MULTIFUNCTIONAL SILICONE BOWLS: These foldable silicone bowls are safe and environmentally friendly, suitable for a variety of uses. Ideal for storing cereal, fruits, vegetables, leftovers, and more. Great for kids' lunches, office meals, kitchen storage, camping, and other daily needs. Designed with snap-on clear locking lids that include an air vent for easy microwave heating. MICROWAVE, FREEZER, AND DISHWASHER SAFE: Safe for use in the microwave, freezer, and dishwasher. Microwave-safe for convenient reheating, dishwasher-safe for easy cleaning, and freezer-safe for storing leftovers. Temperature tolerance ranges from -4F to 428F (-20C to 220C). TIPS: Always pull up the air vent valve on the lid or remove the plug before microwaving.