Run longer distances in preparation for marathon races with all the hydration and essentials packed in Camp USA's Ultra Trail Vest. It boasts plenty of storage for hydration, including an internal sleeve for reservoirs and two pockets for water bottles. The No-Stop System lets you grab or store trekking poles without stopping. Camp USA built this pack out of ultralight and durable ripstop with stretchy panels to accommodate larger layers and lunches, if needed. Its breathable mesh shoulder straps, back panel, and waist belt have padded sides to resist chafing on longer runs.