Durable, double-wall stainless steel vacuum construction with copper insulation, which allows your beverage to stay cold for 24 hours and at least 6 hours for hot beverages. The construction also prevents condensation on the outside of the tumbler. On-trend, durable powder coating. Easy sipping, push-on lid. Eastman Tritan™ straw included. Wide opening for comfortable filling and pouring. Fits most car cup holders. The right size for your daily use!