Patent ID: 8424226

Claim:
An improved ski boot comprising: a shell provided with a fastening device and internally housing an insole of a soft material; at least two sets of front jaw and heel fixing units, removably securable to a sole of the ski boot, wherein a first set of the front jaw and heel fixing units is of a form satisfying regulations for alpine skiing, and a second set of front jaw and heel fixing units is of a form satisfying regulations for ski mountaineering, the front jaw fixing unit having a front end consisting of an upright wall configured to wrap about a toe of the ski boot, the heel fixing unit having a rear end consisting of an upright wall configured to wrap about a heel of the ski boot, wherein the front jaw fixing unit of the second set laterally has openings for engagement by a fork of a dynafit binding, and wherein the heel fixing unit of the second set has, on a rear side, a seat housing a first metallic removable insert to be engaged by two levers of a heel of the dynafit binding; and a second removable insert, said second removable insert having shape and dimensions corresponding to the shape and dimensions of the seat and is applied to the seat when the first insert has been removed from the seat, such to restore a rear circumferential rim of the heel to a smooth conformation.