Abstract: A boot is intended for cross-country skiing, ice skating or roller skating, the boot including an upper that includes stiffeners. The boot has a cuff mounted on the upper so that the cuff can articulate forward and rearward. The boot includes two rivets having pins. The rivets are mounted on the stiffeners at a level with the malleoli of the wearer. There are included circular recesses in the cuff with the recesses facing the malleoli and the pins pass through the recesses. There is an arcuate groove located either on the outer surface of the upper or the inner surface of the cuff. There is an arcuate rib located on the cuff or upper opposite of the groove. The rib and the groove have the same radius centered on the pin whereby the rib moves freely in the groove.