The Targex Tactical Modular Action Pack has one large main compartment with a hydration bladder pocket which has full length opening for ease when packing. Two large vertical exterior side pockets and modular attachment points on the front and side pockets. It also has 3 inner compression straps and 4 exterior compression straps. For comfort, it has a padded back and shoulder straps, it also includes a padded kidney strap, which can be adjusted. All zippers are heavy duty with pull cords.