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 helps to create a powerful sail that is tunable with screw-adjusting batten tensioners. Comes with Ezzy built sail, 2-piece epoxy mast, Competition boom, 1-Bolt Tendon mast base, alloy extension, and uphaul. Designed for demanding recreational sailors. RBS Battens. Item Boom Mast Base Extension 3.0 Kid 120-160cm 340cm RDM 1-Bolt Tendon Short Alum US-RDM 3.5 Kid 120-160cm 370cm RDM 1-Bolt Tendon Short Alum US-RDM 4.0 Sport 129-191cm 400cm SDM 1-Bolt Tendon Short Alum US-RDM 4.7 Sport 150-210cm 400cm SDM 1-Bolt Tendon Medium Alum US-SDM 5.5 Sport 150-210cm 430cm SDM 1-Bolt Tendon Medium Alum US-SDM 6.5 Sport 150-210cm 460cm SDM 1-Bolt Tendon Tall Alum US-SDM 7.5 Sport 182-244cm 460cm SDM 1-Bolt Tendon Tall Alum US-SDM