Contents Alpine ski bindings: for backcountry skiing, alpine touring and for toolfree length adjustment (from top to bottom) Snow brake in open position Modern alpine skiing bindings fix the boot at the toe and heel. In some bindings, to reduce injury the boot can release in case of a fall. This also tended to coincide, within 5mm, with the same mount point as using ski boot center as recommended by alpine ski companies. So now you can interpret to your hearts content how to implement that. As I said, adjust to your whim and hope you like it.