The Hydro Flask 12 oz Coffee Flask combines style, function, and portability. With TempShield® vacuum insulation, it keeps hot drinks hot for up to 12 hours, and cold drinks chilled for up to 24. The Flex Sip Lid is leakproof when closed, so you can toss it in your bag worry free, while its twist open design makes sipping easy. Made from stainless steel, this durable flask is cupholder compatible and dishwasher safe, making it an effortless addition to your daily routine. Enjoy your coffee or tea just the way you like it, without spills or flavour transfer.