Footwear with specially formed insole

Claim 1

Footwear having an upper portion and a sole comprising an insole having an indentation for contact with the ball of the heel of the foot and a heel stop comprising a small elevation in front of the indentation and at a location to be under the rear portion of the internal part of the arch when said footwear is positioned on a foot, the surface of said insole being substantially level between the indentation for contact with the heel and the location of the ball of the little toe whereby the foot is prevented from sliding forward in said footwear, said insole being provided with a yielding and workable support at the location of the ball of the foot and toes, said support being level with the rest of the insole, the outside surface of the sole below the ball of the big toe and the ball of the heel being curved upwardly from a generatrix perpendicular to the direction of motion of the foot toward the edge of the sole, said sole being formed with a straight axis which passes through the center of the indentation for contact with the ball of the heel through the location of the metatarsal bone of the second toe.