<p>Beverages seem to float within our sleek double-wall tumblers, thanks to an eye-catching effect that serves a practical purpose. The two seamless walls of borosilicate glass are separated by an insulating layer of air, so drinks stay cold, yet the exterior remains free of condensation. This glass is perfect for everything from cocktails and spirits to juice, coffee and water.</p> <ul> <li>Crafted of mouth-blown glass with fire-polished rims.</li> <li>Glass remains cool to the touch with hot drinks and will not "sweat" with cold drinks.</li> <li>Glass will not become cloudy over time.</li> <li>Dishwasher safe.</li> <li>Sold as set of four online or individually in our stores.</li> <li>Commercial Grade: Thoughtfully designed and expertly engineered to meet rigorous standards and best practices from select commercial testing.</li> </ul>