Durable, double-wall stainless steel vacuum construction with copper insulation, which allows your cold beverage to stay cold for 24 hours and at least 8 hours for hot beverages. The construction also prevents condensation on the outside of the tumbler. Push-on lid with Tritan™ swivel closure. Wide opening for comfortable filling and pouring. Design features the spinning, geometric bottom. Leed's Exclusive. 20oz.