Loading... Please wait...The ultimate trail and ultra running hydration vest. The HPL # 020 helps you go farther more easily, so at 50 miles and beyond, the vest remains as lightweight and comfortable as it was at mile one. Its 3-way Propulsion Harness minimizes bounce, while its superior construction reduces chafing and won't damage technical apparel. Carrying fluids for several hours on the go has never felt so good.