Drinking coffee the local coffee shop will never be the same. This tumbler has a rubber gasket lid that fits over the top to easily holds small to extra large, 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 insulating a single-use cup, this tumbler can be used as a conventional 30 oz tumbler with a spill proof drinking lid. Comfortably fits in standard cup holders.