Insole for article of footwear and covering for foot

Abstract

An insole for an article of footwear has a shape corresponding to an inner bottom of the footwear and includes, on its upper side, a protrusion having three apexes. With respect to total length from a toe-side end to a heel-side end, the protrusion extends from a position at about ⅖ to a position at about ⅘ of the total length from the toe-side end. The three apexes include a first apex located substantially at the center of the total length and substantially at the center in a width direction of the insole, and second and third apexes arranged in the width direction at positions at about ⅔ of the total length from the toe-side end. The second apex is located at a medial-side edge of the insole. The third apex is located at about ¼ of a length in the width direction of the insole from its lateral-side edge.

1 . An insole for an article of footwear, wherein
 the insole has a shape corresponding to an inner bottom surface of the article of footwear,   the insole comprises, on a side thereof facing upward when attached to the article of footwear, a protrusion having three apexes, wherein, with respect to a total length from a toe-side end to a heel-side end, the protrusion extends from a position at about ⅖ of the total length from the toe-side end to a position at about ⅘ of the total length from the toe-side end,   the three apexes of the protrusion comprise a first apex located substantially at a center of the total length of the insole and substantially at a center in a width direction of the insole, and a second apex and a third apex arranged in the width direction at positions at about ⅔ of the total length from the toe-side end,   the second apex is located at a medial-side edge of the insole, and   the third apex is located at a position at about ¼ of a length in the width direction of the insole from a lateral-side edge thereof.   
     
     
         2 . The insole for an article of footwear according to  claim 1 , wherein
 the second apex is higher than the first apex and the third apex.   
     
     
         3 . The insole for an article of footwear according to  claim 1 , wherein
 the first apex and the third apex are at the same height.   
     
     
         4 . The insole for an article of footwear according to  claim 2 , wherein
 the first apex and the third apex are at the same height.   
     
     
         5 . 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. 
   
     
     
         6 . 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.