The Tyrolia SLD 11 RailFlex bindings are designed to deliver precise skiing performance with a lightweight construction. The Tyrolia RailFlex binding system is distinctive because the heel and toe pieces aren’t mounted directly onto the ski. Rather, a rail system is mounted onto the ski and the heel and toe are placed on the rails. This allows the bindings to slide along the rails when the ski is flexed for even force distribution and maximum edge pressure for an amazing skiing experience. The Tyrolia SLD 12 RailFlex binding gives you innovative high performance and safety features with a lightweight construction.