Jansport - Equinox 40 Backpack Exposed aluminum stay and PE board for structured back panel - See more at: http://www.jansport.com/shop/en/jansport-us/equinox-40-t33z#sthash.aPITufqb.dpuf Front zippered duffel pocket Fully padded foam back panel with Venetech channel Hydration sleeve with clip and port Large main compartment