Start making plans for hiking expeditions and pick up the 2007 Osprey Stratos 40 Backpack. Available in three sizes and colors, the Stratos 40 is one pack that will do it all. A large top loading area and a fixed top lid will let you stock up on all your hiking necessities. This backpack even lets you get to the main compartment through the left front zippered pocket, and horizontal straps allow you to compress the pack when you’re carrying smaller loads. The AirCore back panel cavity hydration options even allows for a variety of packing and carrying options. The 2007 Osprey Stratos 40 Backpack retails for $148.95. Osprey.