These fins are designed by Kai Hopf and Nik Baker.They are G10 construction which is extremely tough and hard to ding. Most G10 fins are very hard meaning they are not forgiving and it is easy to spin the board out. These ones have a flexy tip which allows for any mistakes in foot pressure.This is the New Wave fin. It is designed to accompany the new low grip onshore wave boards.The fin is early planing and loose and easy to spin out (very helpful in onshore bottom turns)When accompanied by a wide tailed, onshore board, the fin has just enough grip for the bottom turn, but will happily slide along the top of the wave, making the top turn a breeze.All the fins are US Box.Check out our new fin buying guide here to get the right fin for your board and your sailing.