Our class mainsail has been in refinement since 1973. Our Dacron selection is the result of diligent testing to NOT be the lightest or most durable, but to be the sail that holds it shape the best over a typical three-year sail rotation. We have found that most “more durable” Dacron mainsails often have substantial shape changes after only one or two seasons! This mainsail comes standard with a vision and spreader window, draft stripes, tapered RBS battens, class insignia, clew slide, and a roll bag.