The perfect companion for any adventure, this flask features a double-wall vacuum to keep drinks hot or cold for 24 hours, with an insulated lid that doubles as a 236ml cup for when you want to enjoy a cuppa with a view. Crafted from 18/8 stainless steel, it will never rust and is BPA-free, as well as being leak proof and fully packable. In 1913, William Stanley invented the all-steel vacuum bottle. Since then, the Stanley vaccum flask hasn’t missed a day of work, a football game, or a trip to the great outdoors. The durable double-wall stainless steel insulation of the distinctive Stanley vacuum flask is iconically American and still works as hard today as it did nearly 100 years ago.