Tervis is a third-generation American-owned and operated company, renowned for the durable construction of its drinkware, the timelessness of its decorations & designs, and the insulation qualities which have stood the test of time. Since 1946, weve proudly made double-walled insulated drinkware that we guarantee for life. Originally engineered to keep drinks cold and hands dry, todays classic tumblers do that and more. Use them at home or on the go.