While floating and boating, you need this versatile tumbler to keep your drinks cold.  Designed to keep your beverage hot up to 5 hours and cold for 15 hours, the mariner-style cup is an 11oz insulated vacuum tumbler that also doubles as a 12 oz can insulator. Its double-wall construction of stainless steel makes it durable to last for years. Features a clear, press-on lid with slide closure and printed "It's Dock O'Clock".  

.: BPA free
.: Vacuum insulated