The Helix 8.25 3Di Decksweeper Mainsail - 1050 is the latest generation moth sail, which is a further development from our Bi-10 World Championship winning designs. The luff tube and deck sweeper are now moulded with the sail to produce a uniquely fair flying shape, with no seams across the flying surface. Camber inducers have been removed and replaced with a split battens, which further enhances the flying shape & usability. The sail is designed at Max luff length 5185mm with a 1150 Decksweeper to give a sail which will perform excellently both upwind and downwind in all foiling conditions.