| 摘要 |
A midsole of a shoe has a low elastic part 20 , a high elastic part 22 and an inclined surface 24 . The low elastic part 20 and the high elastic part 22 include air bubbles. An ethylene-vinyl acetate copolymer (EVA) is used as a base polymer in the low elastic part 20 and the high elastic part 22 . The inclined surface 24 is inclined upward from the inside to the outside. The low elastic part 20 is located to the inside of the inclined surface 24 . The high elastic part 22 is located to the outside of the inclined surface 24 . An inner high elastic part 26 is located to the inside of a low elastic part 20 . The thickness of the low elastic part 20 becomes gradually larger from the outside to the inside along the inclined surface 24 . The thickness of the high elastic part 22 becomes gradually larger from the inside to the outside along the inclined surface 24 . The width Wa of the inclined surface 24 in left and right direction is 5 mm or more and 100 mm or less.
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