Copper lined, vacuum insulated deep draw liner maintains optimal drinking temperatures. Keeps ice over 48 hours. Dual walled 18-8 stainless steel. Lead-free vacuum seal. Includes 2 lids (thumb-slide, screw-on lid and a black can/bottle ring) designed to attach to the Insulator at the same time to prevent loss and provide a seamless on-the-spot transition. Twist top rubberized ring to hold a standard 12 oz. can or bottle. Single self-contained unit transitions between poured drink insulated tumbler, 12 oz can cooler, and 12 oz beer bottle cooler. Powder-coated finish. Fits in corporate and personal coffee machines.