- Safe Material: Our foldable food storage containers are crafted from food-safe PP and silicone. They are non-toxic, odor resistant, environmentally friendly, and BPA-free, ensuring the safety of your food. The smooth interior surface resists grease and is easy to clean. - Space-Saving Design: Featuring a 4-way click closure lid and a leak-proof silicone sealing ring, these containers allow for compact storage. They easily fold down to one-third of their original size, saving you over 60% of storage space. - Versatile Set: The set includes containers in four sizes: 350 ml (13 x 9.5 x 6.5 cm), 500 ml (16 x 10 x 6.5 cm), 800 ml (18 x 12 x 7 cm), and 1200 ml (21 x 13.5 x 7.5 cm), catering to various needs for picnics, travel, work lunches, and more. - Microwave, Dishwasher, and Refrigerator Safe: Designed to withstand temperatures from -40°C to 120°C, our containers are perfect for various storage needs. They come with a small outlet valve on the top for releasing water vapor, making them ideal for reheating in the microwave. - Practical Applications: Use them to pack healthy lunches for work, store leftovers in the fridge, or bring along snacks for your outdoor adventures. Enjoy the convenience of having the right-sized container for any occasion.