As "perfect" a fit as you can get! Dockmate Fender Covers will not absorb water, preventing the sagging and drooping that usually occurs after much use and many washings. These fender covers have an elastic top and bottom as well as Velcro straps, so the covers never fall off. The stretch polyester fabric is antimicrobial and will not fade, mold, mildew, or rot. Dockmate Fender Cover, Fits 6" x 15", 6.5" x 23" Fenders