Ancient mugs were usually carved in wood or bone or shaped of clay, while most modern ones are made ofceramic materials such as earthenware, bone china, porcelain or stoneware.Some are made from strengthened glass, such as Pyrex.Other materials, including plastic, steel and enameled metal are preferred where break resistancedksv and reduced weight are at a premium, such as for campers.Techniques such as silk screen printing or decals are used to apply decorations; these are fired onto the mug to ensure permanence.
