Enjoy your coffee drinking experience with the 30 oz. Versa Cup! Made of stainless steel, each tumbler has a rubber gasket lid that fits over the top to easily hold 16-24 oz. disposable plastic or styrofoam cups of hot or iced coffee. The double wall construction and copper lining keeps beverages hot for up to 6 hours or cold for up to 24 hours, and prevents condensation on the exterior. When not used to insulated a single-use cup, this tumbler can be used as a conventional tumbler and comfortably fits into standard cup holders.