Keeps Hot or Cold for 24 Hours  Unbreakable stainless steel interior and exterior Insulated stainless steel serving cup Thermos vacuum insulation technology for maximum temperature retention, hot or cold The 40 oz. Thermos Stainless King Beverage Bottle features a twist and pours stopper that lets you easily pour and a tight seal without removing it as long as an insulated stainless steel serving cup and durable stainless steel interior and exterior. Built for durability, these beverage bottles are designed to withstand tough treatment, rugged conditions, and extreme weather making it ideal for long walks or weekend nature overnight trips.