o not miss the most trendy tumbler of the year. Durable, powder spray color. Double-wall 18/8 grade 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. Easy sipping, push-on lid with slide closure. Wide opening for comfortable filling and pouring. 30oz.