Nava System
... that the Nava System ski binding used a plastic arm to control the ski, instead of a stiff ski boot?
... that the <b id="mwER4"><a href="./Nava_System" id="mwER8" rel="mw:WikiLink" title="Nava System">Nava System</a></b> <a href="./Ski_binding" id="mwESA" rel="mw:WikiLink" title="Ski binding">ski binding</a> used a plastic arm to control the ski, instead of a stiff ski boot?