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. Due to the nature of bamboo and material variance, there might be a slight difference on laser engraved logos. No two pieces are alike which makes each piece unique for you! Leed's Exclusive. 16oz. And it’s more than an awesome bottle. Welly contributes 3% of sales toward construction of wells in areas without clean water. Learn more at wellybottle.com.