Commonly called "ditch packs" keep your most essential valuables and survival supplies in here at all times so nothing gets.....drum roll...... wet. On top of being water proof here is where our bag differs from others out there. * We improved the zippers. #8 nylon Water resistant zippers for side pockets with rubber welded seams making it perfect to stash the keys, wallet or pack of gum. This is where a lot of bags have under performed. * Reinforced clips that are sturdy and hold up under duress. The bag is meant to be STUFFED and loaded heavy so having faulty clips would not do. * inside storage for lap tops, ipads and other accessories.