HTM-3 10 x 30 Double Layer Black. Double layer means softer, more durable reversible. nbsp;. 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. They are available in a variety of colors and sizes to suit your individual requirements. HTM-3 10 x 30 Double Layer Black. Double layer means softer, more durable reversible. nbsp;. M aster Fender Covers are specially designed to protect the topsides and hull from fender scuff and re duce the need for expensive gel coat repairs. They are made from a premium stain resistant, non-abra