FLUID is designed for intermediate to expert riders weighing 90 -170 lbs. The 6 fin dual thruster setup provides the ultimate in hold and tracking. * Stay on edge, get more speed into the wake and stomp landings without slipping out. The removable center fins provide tracking. * The side fins are curved and angle outwards at 11 degrees to provide extra edge hold and a loose feel in neutral. The continuous rocker is fast and forgiving with smooth pop. * GRIND is very comfortable and user friendly, offering the fit and support to allow riders to progress quickly. * It?s a great binding for the whole family, fitting men?s size 8 ? 12 (EU 37- 46).