With extra water toting capabilities, the Deuter Hydrolite 3. 0 Hydration Pack is camel like. Still lightweight, the 3. 0 gives you 30 more ounces of carry capacity over its little brother for those extra long trips out hiking, running, or biking. The Deuter Airstripes comfort system utilizes two strips of vented foam pads that sit between the back and the pack, creating a channel for the spine and allowing sweat to evaporate through the pads. The breathable mesh shoulder straps with anti chafe pads lighten your load so you can go farther and stay in comfort. The insulated, Mylar lined main compartment houses the included reservoir, which holds 100 ounces of hydrating liquids. And there's another small, front zip pocket for valuables and an energy bar.