This 12 oz. tumbler is constructed of high-grade clear polycarbonate with double wall insulation, which keeps your drinks hotter or colder than glass. Dishwasher (top rack), microwave, and freezer safe and is virtually unbreakable. Logos are embroidered and placed between the double wall construction. Makes a great addition to any collection. Tervis Tumblers come with a lifetime manufacturer"s warranty.