Fender covers should be as tough as the fenders they protect. Thats the criteria we used in developing the Elite Fender Cover series. Polyform uses a premium grade yarn that is resistant to sunlight and abrasion. They are woven by a special knitting machine (there are only a few of these in the world) that produces a seamless tube so you dont have to worry about seams splitting and allows for a heavier yarn content. The result is a fender cover that is built to last for many years and not just a season. So, when it comes to selecting a fender cover, choose the one thats as strong as your fenders, Elite Fender Covers.