They have a smooth texture to look and feel similar to a natural silk sponge and can be used for anything from smoothing clay in ceramic. porcelain , pottery or craft projects Size: 7.5cm/2.95"(Dia.); 2.7cm/1.06" (Thickness); Quantity: 1Pc/3Pcs/5Pcs Sponge; Color: Yellow They are gently curved at the sides and somewhat flattened at the top and bottom It can also be used in the house for everything from applying paint to washing dishes