 The jetted flap pocket is standard for hip pockets, with a small strip of fabric taping the top and bottom of the slit for the pocket.It has a lined flap of matching fabric covering the top of the pocket, sewn in along the seam of the jetting.This flap was initially created to protect the contents of the pocket from any rain, and is therefore traditionally meant to be tucked in when indoors, leaving the jettings exposed for show.