This 28-ounce vacuum tumbler combines style and functionality to keep you refreshed throughout the day. Made from 18/8 stainless steel with a copper-coated interior, it maintains your drinks at the ideal temperature—up to 16 hours cold and 8 hours hot. The matte-coated exterior and AS sliding lid provide a secure fit and easy access. Ideal for both hot and cold beverages, this tumbler is perfect for daily hydration on the go.