Ski boot with release mechanism

In a ski boot fittable in a safety ski binding of a ski and having a foot portion, an ankle portion pivotally mounted on such foot portion for swinging about a horizontal transverse axis in the heel region of the boot and locking mechanism for deterring relative movement of such foot and ankle portions, the improvement comprising a release member pivotally mounted on the boot foot portion for swinging about the same horizontal transverse axis in the heel region of the boot between a locked position in which said release member is engaged in the binding for holding the ski boot on the ski and a released position in which said release member is out of engagement with the binding so as to release the boot from the ski, and control means carried by the boot for normally maintaining said release member in its locked position but actuatable by force in excess of a predetermined force being exerted on the boot to permit movement of said release member to its released position.