Swim fin

Abstract

The present invention discloses a swim fin, including an outsole, a middle sole and a shoe upper sequentially provided from bottom to top; wherein the shape and size of the outsole match the shape and size of a human foot, the outsole is a rubber outsole made of a rubber; the middle sole includes a support part matching the shape and size of the outsole, and a webbed paddling part extending outward along a peripheral of a sole part of the support part; the middle sole is a polyurethane middle sole made of polyurethane; the shoe upper is formed by sewing diving suit fabric; and the middle sole is integrally formed by an upper-containing injection moulding process using the polyurethane, the middle sole is respectively connected to the shoe upper and the outsole during the integral forming process of the upper-containing injection moulding process.

Dependencies are inferred from the claim text.