features a padded sleeve designed to fit a 14 laptop or 3L hydration system bottom essentials pocket front smaller compartment with padded phone holder a hidden bottom compartment to store dirty clothes shoes dual side water bottle pouches and double hipbelt pouch to accommodate your phone MP3 players etc. With such versatility in usage and durability in raw material it will be the best companion for your hiking climbing trekking or any other adventurous sports.FeaturesRIPSTOP AND WATER REPELLENT Made of 210D nylon fabriclining and 600D nylon fabricbottom rip stop and water repellent.VENTILATED BACK LOADING SYSTEM Three-layer back panel with air mesh and three-way ventilation channels Waist panel with air mesh and EVA foam to lessen the burden and shock Ergonomic shock absorbent shoulder straps.BIG STORAGE SYSTEM One main compartment with a padded sleeve to fit 14 laptop or 3L hydration system A front compartment with two phone holders and a mesh pouch inside A bottom essentialsrain coverpouch A hidden bottom compartmentintegrate with the main compartment through opening zippersto store your dirty clothes or shoes Two small mesh pouches on the waist panel to accommodate phones MP3 players etc. Buckled straps on the bottom to fix hammocks tents tripods etc. four attached cord clips with leather pad beneath to store walking poles and the like.CONVENIENT TO OPERATE High-tenacity zippers with pullers for convenient opening or closure and longtime use. Note Others except items listed in the package list are ONLY for reference.