The Fischer (Rottefella)Xcelerator Skate Binding is awesome. First, the mechanism that holds the boot to the ski is simplified, stronger and lighter. It is a lever/hook system that contains no moving parts, cams or springs. Two hooks engage the bar on the sole of the boot at the edges of that bar. this provides a more secure grip than the old NNN system. It also “punches through” any snow that might build up on the boot sole. The hooks are the back end of a front throw lever that is simply pushed down on a slot on the binding plate. Easy to close and open.
Second, the new binding fits all your old boots with NNN soles. No need to change out the boots that fit the R3 or R4 NIS bindings. It also fits on the same NIS plates that have been on the skis for a couple seasons now. The NIS plate is unchanged and the new Xelerator bindings slide right on and off those plates. You retain the same binding movement flexibility as always and can swap the bindings between those favorite skis.
Third, these bindings are light. Lighter than the NNN R4, or R3 or any SNS binding. Couple these with a Fischer Hole ski or the new Madshus Nanosonic skis and you can be flying light.