Set of two Sun"s Tea (TM) 13oz non-fragile double wall glasses. (No plastic part) * Made of non-fragile laboratory rate borosilicate glass, passed freefall ice ball impact test from 16 inches height. * Air insulated in the unique double wall struture keeps cold drinks cold and hot drinks hot, the outside surface always feels comfortable in hand. * Dishwasher and microwave-safe. Hand washable with easy using Sun"s Tea Push&Pull brush * This high quality glass is perfect to use in the home or office. Warranty info available at manufacture web site