| 摘要 |
An item of footwear (1), particularly sports footwear, consisting of an upper (2) and a sole (4) with a lower portion (4a) movable relative to an upper portion (4b), and at least one resilient blade (7a) urging said portions (4a, 4b) apart. Said blade (7a) is arranged outside the space occupied by the user's foot and advantageously bends in a manner substantially similar to buckling.
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