Made Of Stainless Steel With Copper Plated Inner. Functions As A Tumbler And Can Cooler. Vacuum Insulated Sweat-Proof Design. Double Wall Construction For Insulation Of Hot Or Cold Beverages For Hours. Keeps Drinks Cold Up To 24 Hours And Hot Up To 6 Hours. Includes Screw-On, Spill-Resistant Flip-Top Lid And Interchangeable Cooler Rim. Fits Most 12 Oz. Cans, Standard Bottles And Automotive Drink Holders. Replace the Cooler Rim With The Flip-Top Lid To Use As An 11 Oz. Tumbler. Meets FDA Requirements. BPA Free. Hand Wash Recommended.