This is a daypack, meant to go light and fast or supplement another larger pack for a full camping rig. It serves well as a school or travel backpack, too. We build them by hand in Duluth, from a lighter weight 10.10 oz waxed canvas that we get from the same supplier as our heavier 18oz. It's a tighter weave fabric that wears tough, but carries light. The Cliff Jacobson backpack is lighter than, but similarly laid out to it's older "cousin" the Nessmuk Pack.