To solve the problem that sometimes a foot moves forward in a shoe to hurt toes when wings 3 collide with each other by fastening a fastening body etc. of a shoe and the shoe is not fastened, on the contrary toes usually collide with a shoe resulting in being hurt when a shoe is small in size capable of being fixed by fastening, or a wearer feels ache by concentrating pressure to the upper part of the instep abutting on a shoe when a fastening body etc. is tightly fastened in the shoe wide for a foot, changeable to solve the issues.

A sole and an upper at a plantar arch part 2M inside a shoe are joined at a part deeper than a normal one to make an upper of a shoe and a foot maximally contact each other. The plantar arch part 2M of an out sole may not be necessarily scooped out. An adjusting range is widened by enabling an attaching part for a fastening material or the like to be changeable to solve the issues.