Double wall vacuum insulated bottle keeps your beverages colder longer. Made of high-grade 18/8 stainless steel with a sweatproof design. Leak-proof lid is insulated with a nonslip grip and stainless steel accents. Extra-large bottle opening allows you to easily add ice to your beverage. 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 18 hours. Keeps hot for 6 hours. 20 oz. capacity