Durable, double-wall stainless steel vacuum construction with copper insulation, which allows your 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. On-trend, durable powder coating. Push-on two piece lid with Tritan™ swivel closure, pinch the 2 axis joints slightly to remove the top part of the lid for easy cleaning. Wide opening for comfortable filling and pouring. Design features the spinning, geometric bottom. The EastGen logo is laser engraved at 1.75" wide.