The Master Series, Stanley’s most rugged flask. From rolling out of the back of your moving truck to falling off the chairlift, its 1mm thick stainless steel can take all of your beatings. You can fill it with hot coffee in the morning for work and still have hot coffee the next morning for your breakfast. With Stanley’s new QuadVac™ technology, your coffee will stay hot for up to 40 hours and is dishwasher safe. Made to be there for you all day, every day. 25oz / 750mL QuadVac™ insulation 1.0mm / 18/8 stainless steel Double wall vacuum insulated steel cup Steel + lined stopper Leak proof + packable BPA free + dishwasher safe