Abstract: A shoe insole is provided which has a balance adjustability and a shock absorbability, can maintain a balance with a standard foot shape without discomfort, and improves fit and comfort by fitting to a user's foot. The insole is used by insertion into an inner bottom part of a shoe and includes a part that supports an arch of the foot, a part that recovers the balance of the foot to standard values, and a part that supports a heel of an underside of the foot, which improves stability and fit feel. A shock absorbing member is attached by pressure at least to a back side of the part that supports the heel of the underside of the foot. The body part is made of a hard material, and the shock absorbing member is made of a soft material.

Abstract: A shoe midsole using a plastic material having flexibility, repulsion, and restoring characteristics and capable of instantaneously absorbing and damping an impact from every direction. The plastic material, which has flexibility and restoring characteristics, is used as the material of a body of the shoe midsole. The thickness of the body is set to a range from 1.5 mm to 3.0 mm. The body is formed in a shape that can control the arch of the foot. A heel section provided with a U-shaped edge and made of a plastic material is formed on the underside of a heel section of the body so as to be integral with the body. A continuous groove is provided in a region continuing from a side surface of the U-shaped edge of the heel section to the lower surface of the heel section of the body.