Make sure the trail ends before your water supply does with the High Sierra Ridgeline Lumbar Pack. With dual 500ml GE Lexan(R) shatter-resistant water bottles, you get twice the hydration without sacrificing storage space. Plus, the Ridgeline brings you a big top-loading main compartment, zippered front accessory compartment, contoured webbing daisy chain for a carabiner or other gear, and even side compression straps so your adventure lasts as long as your stamina.