As far back as I can remember, Palmer has been using 3D technology. The Carbon Circle exemplifies this technology with the milled-out circles in the board. This technology serves two purposes. First, it reduced the weight of the board. Second, it adds torsional stiffness in strategic places. I recommend the Palmer Carbon Circle 2 for experienced riders who want to push their speed and carving to the max. This board is great for kids who race and have fun on the same board.