Double wall vacuum insulated tumbler keeps wine at the perfect temperature. Made of high-grade 18/8 stainless steel with a sweat-proof design. Lid is made from BPA-free Eastman Tritan? copolyester. Base of tumbler includes nonslip grip for extra stability. Perfect for outdoor and indoor activities and occasions. Passivated interior protects against corrosion. Product does not retain odors or flavors. Lid is dishwasher safe (top rack), hand wash body recommended. BPA free. Keeps cold for 16 hours. 12 oz. capacity