Stoneware soup mugs will help keep your soup warm. They hold a generous 20 oz. Glaze is lead free, oven, dishwasher, and microwave safe. Each piece is hand thrown on the wheel and is unique. These mugs are made from several different colors of clay worked together and then thrown on the wheel. The items pictured are the ones you will receive. The freshly thrown mugs dry for two or three days and are then fired to 2200 degrees. They are then glazed and fired again.