Man Mug Double Walled, 16.9 Ounce, Stainless Steel Mug with Lid Made of kitchen grade 18/8 stainless steel. Doesn't sweat, no need for a drink coaster Double walled with air in between, insulating your beverage from outside temperature. Comes with a plastic lid for drinking hot drinks. Your beverage stays ice cold or piping hot, while the outside of the mug stays room temperature.