When William Stanley Jr. invented the vacuum-insulated thermos in 1913, he changed the way beverages were consumed and let anyone from campers and hikers to workers and school kids enjoy the comfort of a warm beverage any time during the day.
The company is still innovating, and their one-handed vacuum mug is one of their best all-around items yet. Outdoormagazine.com calls it "the only mug you'll ever need." Lightweight, rugged, and easy to grip, the lid swings open with the flick of a button. The vacuum-insulated, double-wall stainless steel construction keeps hot drinks hot for up to 6 hours, and cold drinks stay cold for a full 24 hours. It fits in bike cages and car upholders, and a removable grit guard keeps the drinking surface clean. The lid is both leakproof and dishwasher safe.