The concept of having a cold beer in your hand for 24 hours probably shakes your cerebellum to the core, but that’s what the Hydro Flask ($50) promises. The world’s first vacuum-insulated beer growler uses double wall vacuum insulation to keep cold liquids cold for a day and even spiked hot cocoa stays hot for 12 hours. Regular hot cocoa also stays hot for 12 hours– no alcohol bias here. 64 ounces of liquid refreshment fit inside, and the insulation also means the growler will never sweat or perspire; excellent for job interviews.