Unscrew the insulated vessel's cap to reveal four different components: a hand mill grinder, metal filter dripper, drip kettle, and a tumblr cup. To get that sweet, sweet caffeine rush as you step on the subway or wait in traffic, add 2 oz. of whole beans and crank the grinder like a boss. Once it's settled into the filter below, slowly pour hot water from the drip kettle (which you quickly heated before you left), and let it steep through the grounds. Then, when it's finished, lift off the filter and sip away.