Why It's CoolWe're huge fans of Osprey's compression schemepack sidewalls wrap tortilla-style around your stuff. Not only is the setup exceptionally stable for hauling ropes and other heavy gear; it cinches down nicely on small loads, too. » The mountaineering features are so cleanly designed, they're barely noticeable: ax loops, a center ice-tool tube (perfect size for a fuel bottle), shovel pocket (ditto for a rain shell), gear loops on the hipbelt, and a trio of haul loops. » The main swag compartment is thin and tall, a configuration that spells excellent balance and eliminates sway. » The pack may be slim and light, but it's not austere. The foam treatment is exactly right for a 40-ish-pound load and includes a fully padded back panel.Hmmm . . .The bottom of the pack is cut so narrow, I needed a girdle to convince my 20-degree bag to nest inside.