We're now offering 2 flex options on all orders. Stiff and Flexi. The different patterns are achieved by alternating the configuration of the internal structure of the board. The Stiff boards feature a 3 stringer design and are perfect for big, barreling fast waves when you just want to belt it down the line. The Flexi option features a stringer-less cross weave design which allows the board to bend and propel you out of turns.