Highly organized and weather resistant, this lightweight, agile REI Venturi backpack will take you from ridgeline to ridgeline. Free Flow tensioned mesh backpanel provides uninhibited breathability and alleviates common pressure points. Suspension allows warm air to escape and fresh air to circulate between pack and your back. Perimetric, lightweight tubular aluminum frame provides structure without restricting movement, and it keeps pack weight low. Shoulder straps and hipbelt feature perforated foam padding for breathability they also feature stabilizer straps for setting proper pack position. Precurved shoulder straps and hipbelt match your anatomy for nonbinding comfort, and stabilize and control lateral movement when youre on the go. Top-loading main compartment has plenty of room for those done-in-a-day trips. Two pockets on floating lid one with a water-repellent zipper store your map, headlamp, spare batteries and other small equipment. Front panel features a welded, water-repellent zippered pocket for storing often-used gear. Upper stash zip pocket stores small essentials such as keys and cash. Twin hipbelt zip pockets store those small essentials you want at finger tips, such as GPS, digital camera, lip balm and sunscreen. Lightweight twin tool loops and bungee lash straps let you secure trekking poles and ice axes. Hydration-compatible design features reservoir pocket and drink tube exit port for on-the-go hydration reservoir sold separately. Side compression straps let you cinch down loads for jostle-free carrying.