Built in ultra lightweight silicone coated Mini Ripstop nylon, the new Arc'teryx Axios 50 Backpack - Boys's is dialed for those trekking or multi-day enthusiasts who are passionate about weight-saving. During a traverse of the Stuart Range or a light and fast WestCoast Path out and back, this lightweight pack combines EV50 Perforated foam, 6061 aluminum stays and HDPE framesheet with a GridLock suspension that features anatomically shaped shoulder straps, a modular sternum strap, breathable shoulder straps and hipbelt, and adjustable shoulder straps for a highly breathable for ultra-nice gear carrying. Four compression straps stabilize the load, while a removable/ extendable top lid with two zippered compartments, stretch-mesh stash pockets on the hipbelt, a map pocket, kangaroo pocket with top compression strap, and two stretch-mesh pockets stow easy to reach Must haves.