DYNAMIC ALU MAST Y31The DYNAMIC PLUS ALU MAST Y31 builds on the proven performance of the previous generation, featuring the same efficient profile and solid construction, now further optimized for enhanced stiffness, reliability, and overall control. Built from high quality aluminum with a PU waterproof foam core and a reinforced central structural stringer, it ensures maximum lateral and torsional rigidity, delivering a smooth and controlled ride across all foiling