Abstract: A cover includes a top panel and a bottom panel configured to encase a generally rectangular pad, leaving an opening at a first end of the cover. The cover further includes a flap having a communicating edge between the flap and the top panel, the communicating edge being positioned at the first end of the cover. The flap includes two sides substantially parallel to each other at the communicating edge, the sides extending in parallel relationship to each other for a distance at least equal to the thickness of the pad, the sides then extending in converging relationship toward a distal end of the flap.