Corzo Copper Vacuum Insulated Cup. The Corzo copper vacuum insulated cup has a double-wall vacuum construction with copper insulation which means it keeps drinks hot for 8 hours and cold for 24 hours. The construction prevents condensation on the outside of the tumbler. Easy sipping, push-on lid. Features spray powder coating on the outer body. Wide opening for comfortable filling and pouring. Volume capacity is 350 ml. Presented in an Avenue gift box. Stainless steel.