Trekking backpack with main compartment featuring hydration sleeve and removable divider to lower zipped base compartment. Side mesh pockets and compression straps, large mesh pocket in front panel, raincover in base, lid features internal and external zipped pockets, fittings to secure waking poles or ice axe, Airmesh adjustable backsystem, Airmesh fully padded shoulder harness with top adjusters and sternum strap, Airmesh padded hip wings with integrated accessory pockets.