This 4-piece set of large-capacity storage containers, each with a capacity of approximately 5.3 liters, is made from plastic via an injection-molding process. Each container comes with a lid, making them perfect for storing various food items. They are ideal for holding flour, sugar, rice, grains, beans, and other dry goods, as well as for general kitchen organization. The 4-piece set allows for the categorization of different ingredients, while the large capacity is perfect for daily household use; the containers can be arranged side-by-side or stacked. The included lids help keep moisture out. Please clean and dry thoroughly after use. This set is excellent for home kitchens, baking preparation, and organizing dry pantry staples.