<p>The boot is of the rear-entry boot type and comprises an articulated upper consisting of two parts (3, 4) and equipped with a first lever-tensioner (6) acting on a cable of which one end is connected to a second tensioner (9) connected permanently to the front part (3) of the upper. When the first tensioner (6) is closed, the opening of the second tensioner (9) ensures sufficient relaxation of the upper to permit a rest position and easy walking. <IMAGE></p>