Each object is double slip cast, on the inside having a fine, smooth porcelain finish, while on the outside is left matte, with a rugged appearance given by the stoneware. Contrasting, simple and useful, Sand Series pieces are touch-friendly. Double fired at 900°C and at 1250°C, holds aprox. 160ml. All ceramic materials used are non-toxic, food safe, and dishwasher safe.