SPACE-SAVING STACKABLE glass mixing bowls set will save space in your kitchen. The round glass bowls with wooden lids neatly nest inside each other, allowing you to store them in cupboards. Glass bowls set includes 5 DIFFERENT SIZES: 0.2 QT, 0.5 QT, 1.1 QT, 2.1 QT, 3.75 QT ULTRA DURABLE clear glass bowls are made of BOROSILICATE GLASS, up to 5 times stronger than ordinary glass. Our glass nesting bowls are microwave, oven, freezer, and dishwasher safe. MULTIPURPOSE. Perfect for baking and for storage, this glass container set is perfect for hot and cold foods.