| 摘要 |
PROBLEM TO BE SOLVED: To improve functions of a midsole.SOLUTION: A first foam N and a second foam S have different mechanical properties from each other. In any one region of a forefoot part 1F, a middle foot part 1M, and a heel part 1R, a thickness of the first foam N on an inner side M of a foot is different from that on an outer side L. In the region in which the first foam N has different thicknesses, a thickness of the second foam S on an inner side part SM is different from that on an outer side part SL, the inner side part SM and outer side part SL supporting a rear side of the foot. Between the inner side part SM and outer side part SL in an upper layer 2, a taper part ST is arranged which changes in thickness as extended from the inner side M to the outer side L. A change degree of the thickness in the taper part ST is larger than that in the inner side part SM or that in the outer side part SL.SELECTED DRAWING: Figure 4 |
