A storage pouch has a pouch body and a cord. Embodiments of the apparatus comprise a pressure-plate configured with a pole-ball-socket, a pole-ball, and a flexible pole section. The engaging edge has a head tooth recess to cooperate with the head tooth, a leveling tooth to cooperate with the leveling tooth recess, an intermediate tooth recess to cooperate with the intermediate tooth, a locking tooth to cooperate with the locking tooth recess, and a foot tooth recess to cooperate with the. Additionally, the panel configuration allows curving longitudinally without corrugations.