ROBSHIP Winch Covers, other than making the boat look smart, protect the winch from knocks and bangs along with your shins and elbows. The covers protect your winch from dirt, dust, salt and UV damage. The cover has an internal fabric sleeve and drawstring operated from the side to hold secure in all conditions.The cover is made with durable acrylic fabric. The lining is made with spinnaker cloth, so no worries for the interior being drained with rain or sea water (the cover is not completely waterproof).