A closing device for ski boots and the like, composed of a strapping (7) comprising a flexible cord (8) in the form of a closed loop, one of the ends (10) of which is secured to one of the edges (5) of the part (4) of the boot allowing it to be opened and the other end (14) of which can be subjected to the action of a lever (9) capable of pivoting about a pivot pin (11) provided on the other edge (6) of the part of the boot allowing it to be opened, in order to exert a pull to ensure closing. The pivoting lever (9) is mounted permanently on the boot and possesses, over its length, a continuous slot (15), in which the end (11) of the loop (8) on which the pull is exerted slides freely, in such a way that the two ends of the flexible cord (8) in the form of a closed loop are kept permanently on either side of the two edges of the element of the boot allowing it to be opened and closed.