The Voile Splitboard Crampon for Light Rail bindings takes the frustration out of trying to climb icy skin tracks, and adds security when you're climbing in icy, exposed terrain. These crampons are compatible only with Voile Light Rail bindings 201213 models or later. They feature either a fixed or mobile mode. The mobile mode moves with the binding after each step, increasing efficiency during more moderate ascents. The fixed mode leaves the crampon in place at the base of the board for increased security during exposed climbs.