Polyform U.S. Fender Cover - Black - f/ G-4 HTM-1 F1 NF-4. That was our criteria used in developing the Elite Fender Cover series. Polyform uses a premium grade polyester yarn that is resistant to abrasion and UV exposure. Additionally it resists water absorption better than other materials keeping fenders manageably light when wet. The cover is woven on a special knitting machine that produces a seamless tube meaning no seams to split. This method allows for a heavier stronger yarn content resulting in a great fender cover that is built to last for many years not just a season. Features/Specifications: Hand-crafted with heavy duty polyester fabric for durability Sun resistant abrasion resistant and water resistant Tough 1/4" line drawstring closure Washable; Custom fit for a tailored look Quick and easy installation Package Contents: Polyform U.S. Elite Fender Cover f/G-4 HTM-1 F1 & NF-4 Fenders Polyform U.S. EFC-1: Fender Cover - Black - f/ G-4 HTM-1 F1 NF-4