HIGH FLEXURAL STRENGTH - Made of durable polypropylene plastic material, these Nesting Bowls possess high flexural strength that keeps them highly-resistant to deformation. 12-PIECE SET - This Set includes 0.32 QT, 0.74 QT, 1.37 QT, 2.22 QT, 3.69 QT, and 5.8 QT Prep Bowls with individual lids – perfect for prepping, storing, and serving snacks and meals. SPACE EFFICIENT - When not in use, you can easily nest these multi-purpose bowls inside each other – giving room for other kitchen accessories on your kitchen cabinets or storage. FRESH FOOD EV