Double-wall stainless steel construction, the Stainless King Tumblers vacuum insulation is as powerful as it gets. Keep beverages hot for up to 7 hours and cold for up to 18 hours. Exterior stays cool to the touch with hot beverages ad sweat-proof with cold. Combined with the reliable DrinkLock leak-proof lid and built-in hook to hold tea bags, the Thermos Stainless King 16 Oz. Tumbler is the perfect way to make sure your morning routine never loses steam. Sturdy handle. 3.3 In. W. x 7.8 In. H. x 3.3 In. D. Base diameter: 2-5/8 In.