Double-layer, low-extension woven drop-stitch Fusion Welded technology adds stiffness, improves durability with a higher resistance to puncture, improves shape stability over time and reduces weight. New improved efficiency and reduced drag ensure easier planing. Enclosing the AirPlane’s rear fin box permanently in the board streamlines the bottom shape, which improves early planing and top-end speed. The new box is glued in place and no longer removable, which also makes the board easier to set up.