New from Osprey®, the Stratos 40 daypack keeps it cool and under control, with a light and fast design for full-day summits or overnights.

• Osprey AirCore suspension features twin fiberglass struts for support with flexibility while carrying heavy loads
• Tensioned, contoured mesh backpanel provides a form-fitting and stable carry while allowing full air circulation
• Anchoring into top and bottom wings, the suspension system creates uniform pressure with no hot spots
• Top-loading design gives you easy access to the pack's contents, with a zippered lid pocket for stashing maps and small items
• Easy zippered panel-access allows quick entry to contents without having to empty pack
• Front stretch pocket is ideal for stashing jacket, compass and other often-used essentials
• Large stretch-woven side pockets hold water bottles and organize other small gear items
• StraightJacket compression wings let you securely compress the contents of the pack whether full or nearly empty, without sag or load distortion
• Wings buckle across the front when full; for smaller loads, connect straps to buckles at the edge of the backpanel, cinching one panel over the other
• Sewn-in hipbelt and harness both with Spacer Mesh are contoured and anatomically shaped to provide extra control and comfort
• Spacer Mesh promotes airflow and moisture management
• Zippered mesh pockets on hipbelt let you stash small essentials, such as small digital camera, energy bars, gels and sunblock
• Hydration-compatible design features hydration tube portholes and uses cavity behind mesh backpanel to hold reservoir, sold separately
• Top grab-handle, twin ice axe loops and side compression straps round out the features,Specifications based on size Medium. Specifications for Small and Large torso / base volume / weight are as follows:
• Small - < 18.5 in. / 2,200 cu. in. (38 liters) / 3 lbs.2 oz. (1.43 kg)
• Large - > 20 in. / 2,600 cu. in. (42 liters) / 3 lbs. 6 oz. (1.47 kg)