The O.E.M. Series features a durable 600 Denier accent fabric with an automotive style fabric for the insert section. The 600 denier polyester is highly water resistant and has a high abrasion rating making it really tough when sliding in and out of your vehicle. The tops seating surface is foam backed providing additional cushioning for added comfort. They blend discreetly with your vehicles current interior for a nice factory style look. They also provide exceptional seating protection with the benefits of easy washing and drying. If you want a factory style look and performance then get the OE Series - Cloth Seat Covers.