MTCO 10 oz. Lowball might just be the most perfect personal cup ever made. 18/8 kitchen-grade stainless steel, double-wall vacuum insulation, and Dry-Hand design. Gasket lined crystal-clear lid for a quick level check. From your morning Joe to your favorite adult beverage on the rocks right around cocktail hour. This little bad boy is always ready to roll. Say hello to your new best friend.