Premium stoneware ensures excellent heat distribution for uniform browning and even cooking with no hot spots Colorful glaze is nonporous, non-reactive, scratch-resistant, and resists stains and flavor absorption Virtually nonstick glazed surface easily releases food for quick clean-up, and resists cracking and crazing Superior heat retention keeps food warm or cold for serving Unmatched thermal resistance for temperatures ranging from -9°F to 500°F; Safe for freezer, oven, microwave, broiler, dishwasher and metal utensils