A technical daypack for light and fast backcountry adventure, the Osprey Stratos daypack is Great for day hiking, an afternoon at the crags, even bike commuting. The sophisticated AirCore suspension system allows for full air circulation without sacrificing a stable, form-fitting carry. Briefly, the AirCore backpanel consists of two fiberglass struts with a center stabilization disc anchored into top and bottom ABS wings. Over the top of this lightweight hardware a tensioned mesh backpanel provides the breathable pack to body contact. The Osprey Stratos backpack offers numerous organization pockets, including handy hipbelt pockets for small necessities, side stretch woven pockets Built for quick access to H2O bottles, and a large zippered front pocket in addition to the front panel access to the main compartment. Dubbed the StraightJacket compression system, the Osprey Stratos backpack features arching flaps on either side of the front pocket, connected via the two compression straps to wrap the load securely so it doesn't shift. For smaller packs with the AirCore suspension, be sure to Take a look at the Osprey Stratos 18 and Osprey Stratos 12.