Do not miss the most innovative tumbler of the year. Enjoy a beverage by drinking through the screw-on, slide open lid, or place a 12oz can inside the tumbler fixed with the interchangeable, rubberized ring. You choose! Durable, double-wall stainless steel vacuum construction with copper insulation, which allows your beverage to stay cold for 24 hours and hot for at least 8 hours with the slide open lid. The construction also prevents condensation on the outside of the tumbler. Wide opening for comfortable filling and pouring. Leed’s Exclusive. Patent Pending. 16oz.