Double wall vacuum insulated stainless steel construction. Serves 4 functions, insulated tumbler, 12 oz can cooler, slim can cooler, and bottle cooler. Includes a screw on insulator ring to secure cans or bottles. Keeps drinks hot for 3 hours or cold for up to 9 hours, and bottles up to 4 hours. Hand wash only. BPA free and FDA certified.Item Size: 3 1/8 Diameter x 6 1/4Imprint Area: One Side: 2.75 W x 1.5 H, Wrap: 9.5 W x 1.5 H