Adjustable length crampon

A length-adjustable crampon for a shoe, the crampon comprising:

• a first part comprising a frame;
• a second part;
• an elongated connecting element connecting the first and second parts, the first part and the connecting element being configured to have relative to each other an ability to move along the length of the connecting element to allow an adjustment of the length setting of the crampon;
• setting means configured to selectively adopt:
• a coupling configuration with the connecting element ensuring the length setting of the crampon;
• an uncoupling configuration relative to the connecting member in which the ability to move is authorized in order to ensure the adjustment;
• a locking device configured to selectively adopt:
• a locking configuration in which, when the setting means are in the coupling configuration, the locking device prevents the transition from the coupling configuration to the uncoupling configuration to maintain the length setting of the crampon;
• an unlocking configuration in which variation between the coupling configuration and the uncoupling configuration is authorized;
• the crampon being configured so that, when the locking device is in its unlocking configuration and the setting means are in the coupling configuration, a force exerted on the crampon induces an automatic transition from the coupling configuration to the uncoupling configuration, the force being exerted on the crampon to obtain a relative displacement between the first part and the connecting element according to the ability to move in order to adjust the length setting of the crampon by reducing the length of the crampon.