| 1. A rear balance walking shoe, comprising a sole in which two ground-contact protrusions are formed on the sole at a rear
side with respect to the middle point of the sole to provide a rear balancing effect as a wearer stands while wearing the
shoe, and a heel portion and a toe portion of the sole are elevated in curvature from the respective ground-contact protrusion
to perform see-saw motions with the ground-contact protrusions serving as application points thereof,
wherein the two ground-contact protrusions comprises a first ground-contact protrusion positioned at a region between a point
of 50% and a point of 55% of the sole measured from the front end of the sole, and a second ground-contact protrusion positioned
at a region between a point of 65% and a point of 75% of the sole measured from the front end of the sole,
wherein a middle portion of the sole at regions immediately beside the ground-contact protrusions, a rear portion of the sole
at rear side from the middle portion, and a front portion of the sole at front side from the middle portion each defines a
respective surface curvature with its radius of curvature different from one another to accommodate a rolling support of the
shoe as the wearer walks while wearing the shoe.
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