These double-walled mugs with handle allow you to enjoy a cold drink that stays cold and hot drinks that’ll keep hot longer. With a capacity of 500 ml (17 oz) each, they’re made of borosilicate glass, a material that gives them their transparency and offers a high resistance to heat. Specifications Double-walled mugs that keep beverages hot and cold for longer 500 ml / 17 oz capacity Set of 2