Folding food storage containers: Set of 4 assorted stackable containers. Small 12 ounces, medium 18 ounces, large 27 ounces and Extra large 40 ounces.Save space and portable: folding food storage to 1/3 its original size for easy compact storage. Perfect for travel, backpacking and camping.Storage and staying fresh: each container is ideal for keeping foods such as cereals, fruits, vegetables, baby food dry or wet, keeping them fresh.Safe silicone material: non-toxic and odor resistant. Suitable and safe for microwaves and refrigerators. Each box is the maximum temperature assignment ranges from -40 „‰ to 446„ ‰! Our Tapas also have an air vent for comfortable microwave heating.