| 摘要 |
A fin for underwater activities, which comprises at least one foot pocket (2) provided with an upper (3), made of substantially soft and lightweight material suitable to provide excellent fit comfort and fixed to a sole (4) made of rigid material, and at least one blade (5), which is associated with the sole by way of respective means for rigid coupling which may also be detachable, the blade (5) comprising at least one coupling portion (5a) whose shape is substantially complementary to the shape of a respective seat (6) formed within the rigid sole (4), so as to minimize the loss of energy and achieve optimum propulsion thrust.
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