Ski boot and similar sport footwear

A sport footwear comprising at least a single upper part (23) configured to act as an upper cuff and a lower part (21) acting as a lower shell, the upper part (23) having a pair of opposite and distanced lateral edges (27a, 27b) at least one terminal closing mechanism (38) operatively connected to lateral edges (27a, 27b), at least one other closing mechanism (40) operatively connected to the lateral edges (27a, 27b), the at least one other closing mechanism (40) being different than the at least one terminal closing mechanism (38) and comprising an attachment member having teeth (48) and an actuation lever (43), the at least one other closing mechanism (40) positioned adjacent to the at least one terminal closing mechanism (38), the at least one terminal closing mechanism (38) and the at least one other closing mechanism (40) extending frontally astride the lateral edges (27a, 27b) in order to act in closing on the lateral edges (27a, 27b), wherein the at least one other closing mechanism (40) comprises a single command mechanism (28) configured to drive both the at least one terminal closing mechanism (38) and the at least one other closing mechanism (40) at the same time, the command mechanism (28) comprising at least one main lever (31) pivoted on a first (27a) of the lateral edges (27a, 27b) and at least one connection element (35) to cooperate with the at least one terminal closing mechanism (38) and with the at least one other closing mechanism (40), wherein the at least one terminal closing mechanism (38) and the at least one other closing mechanism (40) are each provided with a respective drive end, connected to the at least one main lever (31), near the first (27a) of the lateral edges (27a, 27b), and with an opposite anchoring end (38b, 43) connected to a second (27b) of the lateral edges (27b, 27a), wherein the at least one main lever (31) comprises at least two arms (32a, 32b, 32c), the command mechanism (28) comprises at least a first pin (34a) connected to the upper part (23) and to which a first arm (32a) of the at least one main lever (31) is pivoted, and at least a second pin (34c) connected to the upper part (23) and to which a second arm (32c) of the at least one main lever (31) is pivoted, the first pin (34a) and second pin (34c) being aligned to define an axis of rotation (X) of the at least one main lever (31), wherein the connection element (35) cooperates with an intermediate zone of the at least two arms (32a, 32b, 32c) of the at least one main lever (31) and is configured to define an axis of connection (Y) parallel or incident with respect to the axis of rotation (X), wherein the drive end of the at least one other closing mechanism (40) comprises an appendix (41) of the attachment member with teeth (48) or of the actuation lever (43), connected to the connection element (35), wherein the at least one main lever (31) comprises a central arm (32b) located in an intermediate position with respect to the first arm (32a) and the second arm (32c), wherein the drive end of the at least one terminal closing mechanism (38) includes a connection band (38a) connected to the at least one main lever (31) in the part of the connection element (35) comprised between the first arm (32a) and the central arm (32b), and the appendix (41) is connected to the at least one main lever (31) in the part of the connection element (35) comprised between the central arm (32b) and the second arm (32c).