Master Fender Covers F-4 - 9" x 41" - Double Layer - Navy. Master Fender Covers are specially designed to protect the topsides and hull from fender scuff and reduce the need for expensive gel coat repairs.They are made from a premium stain resistant non-abrasive loop-knit acrylic fabric which is both durable and fade resistant. Package Contents: Master Fender Covers F-4 Fender Cover Master Fender Covers MFC-F4N: F-4 - 9" x 41" - Double Layer - Navy