Outside Buyers Guide 07 says, ...as comfortable as it is tough.. Hit the trail, breathe deep and leave your cares behind with this lightweight, multi-day pack. 3D molded composite TopoFlex framesheet with soft foam padding and padded ergonomic harness offers support for loads of 40 pounds or less. Engineered with three zones of flexibility, the TopoFlex framesheet flexes like your back: springy lumbar zone, semi-rigid mid back and a rigid upper. Floating lid removes and turns into a waistpack with a preattached hipbelt for day hiking. Full-length, single vertical front zipper opens wide to give complete access to the contents of the pack. Lid and front access feature tough, waterproof RiRi Aquazip zippers to keep the elements out. Durastretch side pockets are large enough for quart water bottles or fuel bottles and do not snag on brush. Dual ice axe loops for strapping on tools and trekking poles are reflective for increased visibility. Features adjustable dual-density foam laminated shoulder straps with 4 inches of fine tuning for each size. Removable dual-density foam laminated hipbelt naturally rotates to follow and move with your hip motion.