Base: 3 7/8" or 98mm. Height: 4" or 102mm. Next generation is a new series of foils incorporated into the LBX2 composite line. 80/20 matched inside and outside foils reduces leading edge drag to handle more speed and create smoother transitions through turns. The foil is proportional to the core length from base to tip, which gives a very full stiff base and fine tip. Micro mattte surface finish for reduced skin tension. Ideal for quads, longboard sidebites and SUP. Comes as a stock quad set.