Palm type swim fin for realizing dorsal stroke in swimming pool, has footwear, rigid sole plate, canopy system or angle opening element, where footwear and rigid sole plate are connected at heel plate level to form articulation of swim fin

摘要

The swim fin has a footwear, a rigid sole plate, a canopy system, an elastic angle opening band or an angle opening element and an opening limitation cord, where the footwear and the rigid sole plate are connected at a level of heel plate to form an articulation of the swim fin. The canopy system is articulated at a heel level. The rigid sole plate forms a body with the footwear.