Performance, durability, and light-weight built into one sail. Majority of X-ply material combined with Dacron is very light yet extremely durable. Endo-batten seam shaping battens helps to create a powerful sail that is tunable with screw-adjusting batten tensioners. This upgrade package includes an Ezzy built sail, 2-piece Carbon 70% Reduced Diameter Mast, Sport Boom, 1-Bolt Tendon Mast Base, Skinny Alloy Extension, and uphaul. Designed for demanding recreational sailors looking for that extra edge of performance and feel.ItemBoomMastBaseExtension3.0Kid 120-160cm340cm RDM-70% Carbon1-Bolt TendonShort Alum US-RDM3.5Kid 120-160cm370cm RDM-70% Carbon1-Bolt TendonShort Alum US-RDM4.0Sport 129-191cm370cmRDM-70% Carbon1-Bolt TendonShort Alum US-RDM4.7Sport 150-210cm400cm RDM-70% Carbon1-Bolt TendonMedium Alum US-RDM5.5Sport 150-210cm430cm RDM-70% Carbon1-Bolt TendonMedium Alum US-RDM6.5Sport 150-210cm460cm RDM-70% Carbon1-Bolt TendonMedium Alum US-RDM7.5Sport 182-244cm460cm RDM-70% Carbon1-Bolt TendonTall Alum US-RDM