Olefin polypropylene and polyethylene spun fibers offer the softness of cotton cloth with the durability and strength of canvas. Like our other fabric offerings, our olefin product is treated (in this case, with a Teflon compound) to ensure that it will resist soiling, stains, mildew and tearing. The finish includes an ultraviolet (UV) inhibitor component that lets olefin retain its color vibrancy for years, even in the harshest outdoor conditions.