The Duo Copper Vac Bottle & Tumbler 22oz is the most innovative style of the year. Enjoy a beverage by drinking through the tumbler which has a screw-on lid with slide opening, or a bottle with screwed-on top, closed with a stainless steel lid. You decide. 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 easy sipping lid. The construction also prevents condensation on the outside of the tumbler. Wide mouth opening for easy cleaning and filling ice cubes. It is an exclusive item.