Abstract: An alpine ski boot has a curb intended to allow the boot to be held on a ski by either a front binding or a rear binding. The curb has a flange (4) which is nonremovably secured to the lower part of the boot and a removable curb piece (8; 16; 16′) fixable either immediately underneath the flange, wherein the overall height of the boot measured from a lower surface of the curb piece to the top of the boot is maximized or immediately above the flange wherein the overall height of the boot from the lower surface of the boot adjacent the flange to the top of the boot is minimized.

Abstract: Ski boot has a shell (1), a collar (4) articulated on the shell and an inner reinforcement element (7) fixed to the collar. The reinforcement element is in the form of a half-collar surrounding the upper edge of the shell. The boot has a wedge-shaped projection (12) of the reinforcement for making the reinforcement interfere with the shell. The projection (12) engages in a notch (13) of the shell, in such a manner that the reinforcement element controls the flexibility of the boot.

Abstract: Alpine ski boot, the lower part of the boot of which comprises, at the front and/or at the rear, a kerb of standardized height intended to allow the boot to be held on a ski by a front binding and a rear binding, in which the kerbs consist, over part of their height, of a part (4) nonremovably secured to the lower part of the boot (2) and, over the remainder of the height, at the choice of the user, of a removable attached piece (8) that can be fixed under the part nonremovably secured to the lower part of the boot or of a removable attached piece (9) that can be fixed on the top of the part nonremovably secured to the lower part of the boot. This allows the boot to be raised off the ski.