The Performance Plus mainsail is customized for your boat and sailing requirements. All the performance plus mains are a tri radial panel layout. Panel alignment is designed with Stress/Strain Analysis Software to assure that maximum longivity is achieved form the sail. Each horizontal seam is stitched with two rows of three-step stitching , no single step zigzag stitching, assures you that each seam will have the maximum strength . All the hardware is the best you can buy. We will help you select the correct type of battens for your application. Sabre Sails offers a wide selection of battens from round fiberglass to tapered carbon.