Rubber-Cal 03-198-ZWCH"Nottingham" Rubber Backed Carpet Entrance Mats, 16" x 24", Charcoal Made with polypropylene fibers and natural and reclaimed rubber, these heavy-duty door mats are ultra durable and will last seasons! This professional looking welcome mat is ideal for any office or commercial building Available in five vibrant colors, these entrance doormats will compliment any entryway With the natural grip of rubber and polypropylene top, this carpet mat will keep your guests safe Rubber backed carpet mats are equipped with polypropylene strands and brush away grime