| 摘要 |
A swim fin having differential stiffness characteristics is provided which includes shoe and blade portions, the shoe portion being configured to receive a swimmer's foot and the blade portion being configured to provide the desired hydrodynamic effect. The shoe portion defines a cavity which is formed in part by a differential stiffness expanse which overlies the forepart of the user's foot. The expanse includes a resilient toe region which covers the swimmer's toes and a less resilient instep region which covers the instep of the swimmer's foot. The blade portion extends from the shoe portion and is operatively connected to the instep region so as to provide the wearer with instep-directed blade portion control. |
