31" x 50" Black Olefin / Polypropylene Mat Rug 31" x 50" Black Olefin / Polypropylene Mat Rug Strengthen your decorative layout with this beautiful mat rug. Created in perfection with machine, and given a lovely black finish, this rug adds a sense of boldness and elegance to just any room. Long lasting olefin and polypropylene yarn with strong jute backing is used to put together this versatile rug. Add to your home for a traditional and transitional flair and beautiful update. Dimensions: 31" x 47" x 0.43".