Fischer Xcelerator Skate NIS Bindings. New technology for faster skiing. Pure race skating binding, 40% lighter, with patented Dual Flexor System and NIS (Nordic Integrated System). The broader binding plate increases the contact area between boot and binding. This gives the sole of the boot additional support that can be felt by all skiers in the form of improved stability. The dual guide rail increases stability and system control considerably. Power transfer and control, especially in sideways motion impulses to the ski are optimised as a result. The minimised space between boot and ski ensures excellent power transfer and sensitivity. No other binding system brings the human foot so close to the cross country ski. NIS - safe connections without screws. The ski and binding plate are joined together permanently as one unit using a high-bond, patented connection. Outstanding power transfer through free ski flex is the result. The patented Dual Flexor System is used on the skating bindings. The additional binding flexor keeps the ski horizontally balanced after very leg kick and prevents the ski tip or tail from becoming caught in the snow.