MSR Field Pak . Our largest capacity back pak features a large cargo area including a water bladder carrier combined with an organized storage compartment in the front . Great for extended range cross country or dual sport adventures . Baja tested and endorsed by Malcolm Smith . Strong high-denier nylon fabrics to accept the harshest conditions . Durable nylon hardware for long lasting performance . Soft lined "electronics" top compartment with audio cable exit grommet . Tool & accessories organizer in front compartment . Easy-cinch side straps to stabilize the cargo . Rubberized bottom panel and trim for wear resistance . Zippered side pockets with easy access to small items . Wide padded back shoulder straps for comfort also feature a chest strap . Padded back acts as a cushion between you and your load . Built-in bladder compartment with hose exit (bladder sold separately) . Tuck-away pocket for waist belt when not in use . Dimensions: 18"(H) X 16.5"(W) X 8"(D)