| 摘要 |
A shoe insole includes a heel portion (12), a mid portion (14) and a toe portion (16). On the under surface of the shoe insole, a cylindrical disc (18) is formed in the center of the heel portion (12). Annular rings (20) and (22) are also formed in the heel portion (12) and concentrically disposed about the cylindrical disc (18). A plurality of arcuate ridges (24) are disposed on the mid portion (14) and constituting arcs of concentric circles radiating outward from said cylindrical disc (18). The cylindrical disc (18), the annular ridges (20) and (22) and the arcuate ridges (24) have essentially the same height and are formed of a highly resilient material such as polyurethane.
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