DOWNHILL SKIING OR SKI TOURING BOOT WITH IMPROVED SKIING-WALKING SELECTION MECHANISM

Ski boot (4) comprising a lower part or foot portion (8), suitable for enclosing the user's foot, and an upper part or leg portion (12), suitable for enclosing the lower part of the skier's leg, wherein the leg portion (12) is hinged to the foot portion (8) so as to rotate in relation to the foot portion (8) around hinges (16) defining a rotation axis (X-X), forwards towards a tip (20) of the boot (4), and backwards towards a heel (24) of the boot (4). The leg portion (12) comprises a selection lever (28) suitable for selectively locking and/or unlocking the rotation of the leg portion (12) in relation to the foot portion (8), and is provided with at least one adjustment lever (32) operatively connected to at least one hook (36) which may be engaged on teeth (40) of a rack (44). The adjustment lever (32) and the rack (44) are fixed to opposite flaps (48, 52) of the leg portion (12) which are mutually closeable, the at least one adjustment lever (32) being operable so as to mutually approach or distance said flaps (48, 52) of the leg portion (12) from each other. Advantageously, the selection lever (28) is operatively connected to means (56) for locking/unlocking the rotation of the leg portion (12) with respect to the foot portion (8). The selection lever (28) is operatively connected to said at least one adjustment lever (32) and/or to said rack (44), so as to bring the flaps (48, 52) of the leg portion (12) closer together when arranged in a skiing configuration and, vice versa when arranged in a walking configuration.