Luminarc stackable bowl. Kitchen mixing bowls stackable glass. Luminarc/arcoroc break and chip-resistant, fully tempered microwave safe. Dishwasher and freezers safe. Arcoroc stacking glass bowls have been a staple in gourmet kitchens in america for over 35 years. These durable bowls come in a wide array of sizes and have a tall rim so same size bowls stack straight. Different size bowls ‘nest’ together for neat, easy storage. You have seen these bowls on tv cooking shows for measuring, mixing and storage of ingredients