a. Polypropylene (also called Olefin) is the most durable and stain-resistant rug fiber. It is a synthetic yarn and is the most commonly used area rug fiber. On average, olefin is soft in texture and is fade resistant.
b. Nylon is another synthetic fiber commonly used in rugs. Its characteristics include: strong and elastic, retains its shape, and it is shiny.
c. Wool is a natural fiber that comes from sheep. It is more luxurious than synthetic fibers and its properties include: 1) hard wearing and moisture absorbent; 2) lightweight and versatile; 3) resistant to dirt and wear and tear; and 4) fire resistant.