| 摘要 |
PROBLEM TO BE SOLVED: To assure traveling stability and to assure a cushion property. SOLUTION: A corrugated sheet 4 is interposed from the heel part to forefoot part in the midsole 3 composed of a soft elastic material of the midsole structure for sporting shoe. The upper midsole 3a and the lower midsole 3b are respectively varied in the hardness from each other. As a result the foot contact of a person wearing the shoe may be improved and, the cushion property improved when the hardness of the upper midsole 3a is made lower. In addition, the impact at the time of landing may be relieved and the cushion property improved when the hardness of the lower midsole 3b is made lower. When the load from the back of the feet acts on the upper midsole 3a having the relatively higher hardness, the corrugated sheet 4 functions to make it possible to prevent the lateral oscillation of the midsole 3a and to assure traveling stability.
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