Details The Rottefella Xcelerator 2.0 Classic Binding's unique construction and low weight gives you more power and better speed, while the binding's low profile provides optimum control in the track. With the included NIS key, you can easily place the binding in the desired position and move it forward or backward to achieve more speed. ∗Depicted on NIS binding plate-not included. Binding System NNN NIS Skiing Style Classic Flex Dual Flexbit Bi-Component 60 Shore Construction Length: 215 mm Width: 56.7 mm Boot Size Range Fits European boot sizes 36-52 Weight 188g / pair Rottefella Xcelerator 2.0 Classic Bindings