The mugs from Thermo Glass collection are perfect for hot and cold beverages Its amazing functionality will allow you to freely hold extremely hot liquids, and also maintains the temperature of your beverage for a longer period The same applies to gelid drinks. Thermo Mug, 13.5 oz. (400 ml), 3-1/4" dia. x 3-1/2"H, high-temperature, shock resistant, dishwasher/microwave safe, tempered, borosilicate glass, clear.