The Lib Tech Park NAS Magne-traction ski shifts the control, edgehold, and power from your tip and tail to under your foot where your balance is centered. The nose and tail are no longer the primary tools used in turn initiation. The bumps in front and behind your feet are progressively less aggressive. This results in a more catch-free tip and tail, better control for freestyle tricks and less falls. The aggressive bumps are under your feet for maximum edge hold and control where you need it. Magne-Traction Freestyle Advantage The extra edge hold you get allows you to ride your narrow ass boards de-tuned for the park and rails and still get great edge hold all over the mountain. Take a file and round your edges so they don’t hang up on the rails, boxes or ledges. Then go ride everywhere!