Premium stoneware is designed for everyday use. Glaze is nonporous non-reactive and resistant to chips scratches and stains. Glazed surface is virtually nonstick for easy cleaning. uperior heat retention keeps hot drinks hot and cold drinks cold. Freezer oven microwave broiler and dishwasher safe. 12 Fluid ounce capacity. Dimensions: 3.5" tall 3.5" diameter. Includes 6 mugs.