1.4 Sizes to meet your needs: This is a 4-piece set PP containers with capacity TOTAL ≈36L≈80Ibs: 4 sizes is from small to big is: You can use them to store different items as you want and it can stack with foldable handle one by one to make your home more clean, tidy and spacious 2.Refrigerable and microwaveable: Made of and reliable PP material, heat and cold resistant. Can be used in environments with a maximum of 140° and a minimum of -20°. Silicone sealing ring and buckle design ensure sealing and freshness, and handle design is convenient for daily use 3.Great Airtight Containers:This 4-piece set is an awesome storage boxes. Useful for anything you want to keep airtight with four locking sides, keeps everything of dirt. Very sturdy and the handle makes transporting a breeze with folding flat on top of the box which makes it easy to layer. They fit well in your refrigerator to keep your food fresh 4.Perfect for Storing Grain: This 4-piece set storage containers are good for bulk dry food storage. With different sizes you can keep pizza, bread flour, oatmeal, rice, white cane sugar, confectioners sugar, brown sugar, xylitol, biscuit flour, cornmeal, waffle, chips, and other baking goods, etc. in them. And they stack nicely. These are your go-to containers for air-tight storage