Saddle-type vehicle (1A;1B;1C) comprising an anti-theft device (100; 200; 300) for a helmet (10A; 10B; 10C), the anti-theft device (100; 200; 300) comprising: - a housing (110; 210; 310); and - an anchoring mechanism (120; 220; 320) adapted to be at least partially received within the housing (110; 210; 310); the anchoring mechanism (120;220;320) comprising: - at least one anchoring member (122',122";222;322) including a male anchoring portion (121',121";221;321) configured to engage a female anchoring portion (11A', 11A";11B;11C) of the helmet (10A; 10B; 10C); and - a lock member (130; 230; 330) associated to the at least one anchoring member (122',122"; 222;322); the anchoring mechanism (120; 220; 320) being adapted to assume: an anchoring configuration, in which the male anchoring portion (121', 121"; 221; 321) engages the female anchoring portion (11A',11A";11B;11C) of the helmet (10A; 10B; 10C) to hold the helmet (10A; 10B; 10C); and a release configuration, in which the female anchoring portion (11A',11A";11B;11C) is disengaged from the male anchoring portion (121', 121"; 221; 321) to separate the helmet (10A; 10B; 10C) from the vehicle (1A;1B;1C), wherein the male anchoring portion (121',121";221) can selectively assume an anchoring position and a releasing position associated respectively to the anchoring configuration and the releasing configuration of the anchoring mechanism (120;220), wherein the movement of the male anchoring portion (121',121"; 221) between said anchoring and releasing positions is controlled via the lock member (130; 230), and wherein the at least one anchoring member (122',122";222) is slidably coupled inside to said housing (110; 210) to slide along a sliding axis (X1; X2), characterised in that the at least one anchoring member (122',122") comprises a first and second portion (121', 121") opposite to each other and arranged so that at least one of them is configured to slide with respect to the other along said sliding axis to engage a first and/or a second female anchoring portion (11A',11A") of the helmet (10A; 10B; 10C). - a housing (110; 210; 310); and - an anchoring mechanism (120; 220; 320) adapted to be at least partially received within the housing (110; 210; 310); the anchoring mechanism (120;220;320) comprising: - at least one anchoring member (122',122";222;322) including a male anchoring portion (121',121";221;321) configured to engage a female anchoring portion (11A', 11A";11B;11C) of the helmet (10A; 10B; 10C); and - a lock member (130; 230; 330) associated to the at least one anchoring member (122',122"; 222;322); - at least one anchoring member (122',122";222;322) including a male anchoring portion (121',121";221;321) configured to engage a female anchoring portion (11A', 11A";11B;11C) of the helmet (10A; 10B; 10C); and - a lock member (130; 230; 330) associated to the at least one anchoring member (122',122"; 222;322); the anchoring mechanism (120; 220; 320) being adapted to assume: an anchoring configuration, in which the male anchoring portion (121', 121"; 221; 321) engages the female anchoring portion (11A',11A";11B;11C) of the helmet (10A; 10B; 10C) to hold the helmet (10A; 10B; 10C); and a release configuration, in which the female anchoring portion (11A',11A";11B;11C) is disengaged from the male anchoring portion (121', 121"; 221; 321) to separate the helmet (10A; 10B; 10C) from the vehicle (1A;1B;1C), wherein the male anchoring portion (121',121";221) can selectively assume an anchoring position and a releasing position associated respectively to the anchoring configuration and the releasing configuration of the anchoring mechanism (120;220), wherein the movement of the male anchoring portion (121',121"; 221) between said anchoring and releasing positions is controlled via the lock member (130; 230), and wherein the at least one anchoring member (122',122";222) is slidably coupled inside to said housing (110; 210) to slide along a sliding axis (X1; X2), characterised in that the at least one anchoring member (122',122") comprises a first and second portion (121', 121") opposite to each other and arranged so that at least one of them is configured to slide with respect to the other along said sliding axis to engage a first and/or a second female anchoring portion (11A',11A") of the helmet (10A; 10B; 10C). an anchoring configuration, in which the male anchoring portion (121', 121"; 221; 321) engages the female anchoring portion (11A',11A";11B;11C) of the helmet (10A; 10B; 10C) to hold the helmet (10A; 10B; 10C); and a release configuration, in which the female anchoring portion (11A',11A";11B;11C) is disengaged from the male anchoring portion (121', 121"; 221; 321) to separate the helmet (10A; 10B; 10C) from the vehicle (1A;1B;1C), wherein the male anchoring portion (121',121";221) can selectively assume an anchoring position and a releasing position associated respectively to the anchoring configuration and the releasing configuration of the anchoring mechanism (120;220), wherein the movement of the male anchoring portion (121',121"; 221) between said anchoring and releasing positions is controlled via the lock member (130; 230), and wherein the at least one anchoring member (122',122";222) is slidably coupled inside to said housing (110; 210) to slide along a sliding axis (X1; X2), characterised in that the at least one anchoring member (122',122") comprises a first and second portion (121', 121") opposite to each other and arranged so that at least one of them is configured to slide with respect to the other along said sliding axis to engage a first and/or a second female anchoring portion (11A',11A") of the helmet (10A; 10B; 10C).