Pivot system

This allows for normal walking motion. There is a hole in the decking which allows the toe of the foot to go into the snow and push off while the frame remains on the surface of the snow. There is a Stationary Pivot System SPS which does not allow the shoe to drop away from the frame, and a Rotational Pivot System RPS which does. SPS is best for speed, while a RPS is best for longer distances.