The 4' x 5' Steel Drag Mat is an asset to any soft court's regular care and maintenance, primarily for preventing the growth of algae, mold and even hard spots. Dragging a steel drag mat over the court is the equivalent of 56 blades scraping over it in a single pass. The steel drag mat levels high spots, fills in low spots and turns over the surface, which never gives algae a chance to develop. 35 lbs.