FLUID is designed for intermediate to expert riders weighing 90 -170 lbs.. The 6 fin dual thruster setup provides ultimate hold and tracking. Riders 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. PRIMO is the perfect name for this performance binding. They're noticeably stiffer and more form fitting than our Standard Series bindings.