Copper-lined, vacuum-insulated deep draw liner maintains optimal 7X drinking temperatures, Durable powder-coated finish, Sweat-free design, 18-8 Stainless Steel dual wall construction, Patented, 1-year limited warranty, Twist top rubberized ring designed to hold 12 oz slim cans, Lead-free vacuum seal, Features thumb-slide, screw-on lid to prevent spills and maintain drink temperatures longer, Dual function tumbler and 12 oz slim can cooler, Both lids attach to the body of the unit at the same time. This ensures no pieces are lost for a seamless on-the-spot transition,