If your hydration system is lacking, upgrade to the Nathan VaporHowe 12L 2. 0 Insulated Hydration Vest to make sure the midsummer sun and dry air don't get in the way of your runner's high during your training runs now or during your upcoming race. As its name suggests, the VaporHowe was designed in partnership with a certain professional ultrarunner. Whether you're familiar with Howe or not, know that she made sure the breathable vest came with a tailored, close fit that limits bouncing at all costs. It holds its plump 1. 6-liter bladder firmly in the rear portion of the vest, ensuring you stay hydrated on race day when temperatures soar and aid stations are miles apart. Other pockets secure essentials like your phone and energy gel, and Nathan added reflective accents in case the race starts or finishes in the dark.