Our all purpose (AP) class mainsail is designed for durability and built from Dacron® with a firm, racing finish. This sail comes standard with vision and spreader windows, tapered RBS battens, roll bag, draft stripes, insignia, numbers, Cunningham, and clew slide. Price also includes class royalty. This sail is also offered in a softer Dacron® fabric with a more forgiving cruising finish; please contact a class expert or your local loft for this option.