What are the different types of cross country ski bindings

Their New Nordic Norm (NNN) system differed from Salomon's by having two ridges on the binding plate that fit into two grooves in the boot, whereas SNS had only one ridge. This remains the same today and is the reason you cannot use Salomon boots on the NNN system (and vice versa).

NNN boots have a single bar at the toe and two channels that line up with corresponding ridges on the binding. NNN BC boots have the same configuration, but with a thicker bar and wider, deeper channels. NNN boots and NNN BC boots are not compatible with the same bindings!

The three main binding types are: traditional alpine, alpine touring, and tech bindings. Traditional alpine bindings are the most common binding type and are used for downhill skiing only.

SNS PILOT – the boot is connected to the ski via two metal rods. NNN NIS – NIS means a Nordic integrated system, which was developed by Rottefella, Madshus, and Rossignol. NIS is the plate integrated into the ski. Then you can add NNN bindings just via the click-on system without any drilling into the ski.