Tackle long days on the trail with this versatile run vest featuring included hydration, smart pocketing and a stable, bounce-free men's fit. Light, soft and packable, the Duro 6 features 360° stretch structured mesh fabric that stays put while you put in the miles and two Hydraulics™ 500 ml Soft Flasks that keep hydration and calories handy. Offering streamlined pocketing for extra layers.