McKee's 37 Marine & RV Grime Eraser Pads utilize the latest in advanced foam technology to cut through stubborn grime stains when paired with our hugely popular Grime Remover. Constructed out of a special melamine resin that cures into a super tough scrubbing foam, Grime Eraser Pads quickly and effortlessly remove stubborn grune stains from vinyl seat cushions, rubber bumpers, fiberglass, and virtually any other part of your boat or RV that's plagued by grime stains.