Abstract: An elongated flexible strip is provided having at least one side thereof defining a rough scrubbing surface and the aformentioned one side includes a transversely extending convexly rounded hump centrally intermediate the opposite ends of the one side. The strip includes a pair of thin opposite side panels of flexible material and a central thicker panel of flexible resilient material sandwiched between the opposite side thin panels. The thin panels include registered side marginal edges and end marginal edges sewn together whereby to encase the central thicker panel fully within the confines of the thin panels. The transversely extending and convexly rounded hump is defined by a transversely rounded body of resilient material disposed between the thin panel defining the rough scrubbing surface and the adjacent side of the thicker panel. The thin panels are sewn together through the thicker panel along transverse zones of the strip extending along and disposed on opposite sides of the rounded body.