| 摘要 |
A uniquely configured fin (2) that has an open instep (60) and which is secured to the foot of the wearer by padded securement means (52) so as to accommodate a plurality of foot sizes and wherein the fin (2) is made in a two part single mold process. Protuberances (70) may be placed on selected drag surfaces of the fin (2) to act as vacuum breakers to reduce drag of the fin (2) as it propels a swimmer through the water.
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