| 摘要 |
<p>Swim fin comprising a sail-shaped portion (6) and a leg extension (10) rising above the instep (11), characterised in that the front face of the said leg extension has a smooth and continuous propulsive surface (13) rising above the instep and disposed in line with the propulsive surface (9) of the sail-shaped portion; the said fin thus comprising a single and continuous propulsive surface (13-9) of great length. <IMAGE></p> |
