Imprint Method: Unimprinted - The wine connoisseur's perfect companion. No need to sacrifice the virtues of your favorite bottle. With copper vacuum stainless steel construction, our wine tumbler maintain preferred temperature, preserve flavor, and eliminate condensation on the external powder coat finish. A non-slip silicone pad on the base provides a soft landing on surfaces to avoid scratches and spills. Also can be used for hot beverages. Tumbler 6 Hours Cold, 4 Hours Hot. Recommended to hand wash only. Exclusive. 12oz.