| 摘要 |
A structural element for a sports shoe provided with a casing able to be selectively configured between a first rigid condition and a second flexible condition. The structural element comprises a tongue, shaped and provided at least with a first segment, or lower segment, attached to the casing, and a second segment, or upper segment, pivoted to the first segment, so as to be selectively taken to a first operating position in which the second segment is rigidly aligned with the first segment, and a second operating position in which the second segment is free to incline with respect to the first segment and substantially follows the movement of the tibial zone of the user's leg.
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