12 oz. Copper Insulated Wine Cup with Gift Box laser engraved "Nurse" All our drinkware is made of top quality copper lined double walled stainless steel laser engraved with care! This insulated cup is made of durable, double-wall 18/18 stainless steel vacuum construction with copper insulation. This allows your beverage to stay cold for 24 hours and hot for at least 6 hours. The construction also prevents condensation on the outside of the tumbler. Easy sipping, push-on lid. Wide opening for comfortable filling and pouring.