The SX10 masts present the best performance in the range with the fastest possible reflex response possible, giving the sails turbo-charged acceleration, an extremely wide wind range, and lightweight handling. SX10 stands for 100% carbon content. They are designed from a top grade and high tensile strength pre-preg carbon. This technology ensures optimum control of resin content and resin distribution throughout the laminate. The carbon layup features and inner layers of 45 degree carbon weave to control torsion and quick reflex response. The outer layer carbon has a 90 degree orientation for highest possible strength. The SX10 mast feature a progressive constant curve which means that the bend curve is constant but the base is stiffer than the top. This provides optimal sail dynamics allowing the bottom of the sail to generate power, and the top of the rig to quickly release power. The mast is the spine of the rig, so to get the best possible performance out of your rig, choose SX10.