Abstract: A fastening device particularly usable for sports shoes, such as roller skates or ice skates or ski boots, includes a base (5) which is associated with a first flap (2) of the shoe and from which there protrude two shoulders (6a, 6b) for the pivoting of a lever arm between which a support for a pawl (14) for selective engagement with a toothed tab (4) is pivoted. The support has at least one lateral protrusion (22) which interacts with a hole (25) formed on shoulder (6a) of the base; this allows to achieve easy snap-closing and snap-opening of the lever arm.

Abstract: A skate with aligned wheels including a shell which is monolithic with a support for the wheels. The shell is open upwardly and to the rear, and a quarter and a tongue can be slidingly and selectively associated therewith, respectively in a rear position and in an upward region. The quarter has, in a rearward region, a grip handle for the user. The skate also includes a brake which is associable, in a snap-together manner, at a frame which can be associated with the support. A skate with aligned wheels is thus obtained in which it is possible to vary the size number merely by varying the placement of the quarter with respect to the shell; the skate can furthermore be carried easily by the user.