To know his walking line by the diminishing state of the memories and marks, hence a combination of parts such as a long sock and a foot bottom plate, to do right walking resulting in an excellent effect that harmful stress 'an excessive impact' and 'more twisted than needed' do not occur, to know the standard when making a footwear which fits to his feet, and to statistically prove a causal relation between a walk and a chronic pain.

A footwear is provided in which a normal walking line 3 is applied to the surface of a bottom 2 of the footwear, which has memories and marks 4, 5, 6, and 7 with approximately regular intervals about 1 to 5 right and left centering around the normal walking line in a heel portion, the first metatarsophalangeal joint portion and/or a tiptoe portion, and in which abnormality of one's gait can be confirmed in advance.