Insole for article of footwear and covering for foot

An insole for an article of footwear, the insole comprising:

• three protrusions on a side of the insole facing upward when attached to the article of footwear, wherein
• the three protrusions comprise:
• a first protrusion having an apex located substantially at a center of a total length from a toe-side end to a heel-side end of an inner bottom of the article of footwear, to which the insole is attached, and substantially at a center in a width direction of the inner bottom;
• a second protrusion having an apex located at a position at about ⅔ of the total length of the inner bottom from the toe-side end and corresponding to a medial-side edge of the inner bottom;
• and
• a third protrusion having an apex located at a position at about ⅔ of the total length of the inner bottom from the toe-side end and at about ¼ of a length in the width direction of the inner bottom from a lateral-side edge thereof.

A covering for a foot, the covering comprising:

• a first protrusion having an apex located substantially at a center of a total length from a toe-side end to a heel-side end of an inner bottom and substantially at a center in a width direction of the inner bottom;
• a second protrusion having an apex located at a position at about ⅔ of the total length of the inner bottom from the toe-side end and corresponding to a medial-side edge of the inner bottom;
• and
• a third protrusion having an apex located at a position at about ⅔ of the total length of the inner bottom from the toe-side end and at about ¼ of a length in the width direction of the inner bottom from a lateral-side edge thereof.