Keep your beverage chilled to the ideal temperature in double-walled FREEZE™ plastic cooling glasses. Place it in the freezer for two hours for an "on the rocks" temperature that lasts for hours, without watering down your drink and diluting the flavor with melting ice. Each glass has an insulated silicone grip band for in-hand comfort. Tritan™ and silicone BPA-free plastic Gel keeps drinks chilled for hours Holds 9 oz. Hand wash At Frontgate, our primary focus is quality. We guarantee that every product we sell will stand up to the supreme test – our customers' satisfaction. To learn more about our policies, visit our Shipping & Processing, Returns & Exchanges and Warranty & Price Guarantee pages.