The Welly® Copper Vacuum Insulated Tumbler features 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. The construction also prevents condensation on the outside of the tumbler. Comes complete with on-trend, durable powder coating and the natural bamboo wrap. It features a screw-on lid with slide closure and a wide opening for comfortable filling and pouring. Perfect for ice cubes. No two pieces are alike which makes each piece unique for you! 16oz. And it’s more than an awesome bottle.