Features Nylon Six exterior zippered pockets and three slip pockets. Description Product Description The third generation of the Stratos Series continues to offer unparalleled design and features in a ventilated daypack. We've simplified the fit with two torso sizes that match the fit range of Osprey's gender- specific styles. Styling and materials have been upgraded as well. These packs are full-featured and ultra-comfortable, providing versatility for a variety of adventures.