Stanley Utility Drink-Thru Desktop Mug - 16ounce/ .47 Liter Easy open drink-thru lid. Turns left for drinking and right to close. Dishwasher safe. Cleans hassle-free Double wall foam insulation. Keeps it hot/cold. Stainless steel outer wall. Durability where you need it. Sturdy build. Solid from camp to work.