A pack of this size is a solid chocie when you're carrying your own plus your children's gear, or photography or other gear on a day trip. For those into very compact overnighting gear, the volume suffices for several night outings. The main compartment is accessible via the top as well as a hidden side zipper. The lower compartment has a dedicated zipper. - AirSpeed carrying system for great carrying comfort - 210 denier Nylon fabric - Raincover included - Zippered front pocket - Two hip belt pockets - Stretchy side pockets - Dedicated hydration bag pocket (hydration bag sold separately) - Stow-on-the-Go pole holders for use on the fly - Side compression straps - Ice axe holder - Front panel straps for carrying gear - Integrated flap with two pockets