The Calcutta Stainless Steel Traveler Insulated Tumblers are built for stalking the flats, chasing fish offshore, tagging along to work or just relaxing on the beach. These tumblers will not sweat in the heat of the summer and will keep your beverages ice cold (and your coffee steaming hot). They are double walled, vacuum sealed constructed with 18/8 Stainless Steel and are BPA free. Includes removable lid and available in 20oz and 30oz sizes. Hand wash only.