Swimming shoe for breast stroke

A breast stroke swimming shoe, comprising a shoe body including upper wall means, bottom wall means forming sole means, inner side wall means, and outer side wall means, said wall means being operatively interconnected to form a foot receiving cavity, first outer propulsion flap means (6), first hinge means (8) operatively securing said first outer propulsion flap means (6) to said bottom wall means substantially alongside said outer side wall means for permitting the folding of said first outer propulsion flap means inwardly toward said sole means in response to a pull portion of a breast stroke, second inner propulsion flap means (7), and second hinge means (9) operatively securing said second inner propulsion flap means to said inner side wall means substantially alongside said upper wall means for permitting the folding of said second inner propulsion flap means downwardly toward said inner side wall means in response to said pull portion of a breast stroke and folding angle limiting means operatively arranged to limit the folding angle of said first and second propulsion flap means for permitting the simultaneous unfolding of both propulsion flap means into a propulsion effective plane in response to a push portion of a breast stroke, said folding angle limiting means being positioned for defining the fully unfolded position of said first and second propulsion flap means in which said flap means extend substantially at right angles to the direction of a breast stroke propulsion force vector exerted by the push portion of the breast stroke and wherein said outer propulsion flap means (6) extends in its rest position approximately in parallel to said sole means and in its work position approximately at a right angle to said sole means and downwardly from said sole means.