Air-passage structure of shoe sole, has air passages provided with support part which is engaged to upper face of shoe sole so that air passages may not fall from through-hole

摘要

Air passages (6) are mounted by the through-hole (5) which penetrates a shoe sole (1). Each air passage is provided with a support part (60) and a convex part (61). The support part is engaged to the upper face (2a) of the shoe sole so that the air passages may not fall from the through-hole. The convex part enters toward the inside of the through-hole. A ventilation hole (62) which passes through air is penetrated vertically to the convex part.