Double wall vacuum insulated food jar keeps your food hotter or colder longer. Made of high-grade 18/8 stainless steel with a sweat-proof design. Passivated interior protects against corrosion. Product does not retain odors or flavors. Lid is dishwasher safe (top rack), hand wash body recommended. Lid is leak-proof when sealed. BPA free. Keeps cold for 12 hours. Keeps hot for 8 hours. 12 oz.