Abstract: [Problem] To provide a shoe insole that can inherently maintain appropriate meshing with foot joints at a high level. [Solution] A sheet section, disposed on the entire base of a shoe, and a support plate, formed from a material harder than the sheet section are provided. The sheet section and the support plate each comprises an inner curved surface section, curved in an arch shape with an end section standing upward, an outer wall section, curved in an arch shape, with an end section standing upward, and a central wall section, formed between the inner wall section and the outer wall section. The support plate comprises an inner ridge section, formed on the boundary between the inner wall section and the central wall section, and an outer ridge section, formed on the boundary between the outer wall section and the central wall section.

Abstract: The present invention aims at controlling the balance of a skeletal structure of a foot of a user, and reducing the stress applied on the feet or body of the user wearing the footwear. In order to realize the above objects, the present invention provides an insole 1 for a footwear, having an elevated convexed center section 2 formed on a contact surface to be in contact with a foot, positioned at an intermediate area between a portion corresponding to a base of a big toe of the foot and a portion corresponding to a base of a little toe of the foot, and a concaved center section 3 formed on the contact surface in contact with the foot, positioned on both sides of the convexed section 2, and extending from the portion corresponding to the base of the big toe or the portion corresponding to the base of the little toe to the portion corresponding to a heel.