A shoe comprising: an upper, the upper forming an interior portion for receiving a foot of a woman, the interior portion including a toe cavity and a heel cavity; a midsole, the midsole having (i) a toe end, (ii) a heel end, (iii) an inner side, and (iv) an outer side, wherein a perimeter of the midsole is stitched to the upper thereby forming a bottom to the interior portion that is bounded by a first seam; a heel outsole patch stitched onto a heel portion of a first face of the midsole; a toe outsole patch stitched onto a toe portion of the first face of the midsole; an insole that is affixed to the bottom of the interior portion; wherein there is a spacing between (i) the heel outsole patch stitched onto the heel portion of the first face of the midsole and (ii) the toe outsole patch stitched onto the toe portion of the first face of the midsole, the spacing extending from the inner side to the outer side and occupying a position intermediate the toe end and the heel end thereby permitting the entire shoe to fold about an axis in the spacing running between the inner side and the outer side; the shoe is configured to fold between (i) an extended state wherein the heel outsole patch and the toe outsole patch are coplanar or approximately coplanar and (ii) a folded state in which the shoe is bent about the axis such that a portion of the upper comprising the toe cavity is tucked into the heel cavity, and the shoe has a maximum outsole ratio OR, wherein OR = D × T × W M wherein D is an average depth of a groove in the toe outsole patch used to stitch the outsole patch onto the toe portion of the first face of the midsole, T is an average thickness of the toe outsole patch, W is a maximum width of the toe outsole patch, and M is a width of the midsole at the point of maximum width of the toe outsole patch, wherein M is greater than W, and wherein the OR ratio of the shoe is greater than 7.0. an upper, the upper forming an interior portion for receiving a foot of a woman, the interior portion including a toe cavity and a heel cavity; a midsole, the midsole having (i) a toe end, (ii) a heel end, (iii) an inner side, and (iv) an outer side, wherein a perimeter of the midsole is stitched to the upper thereby forming a bottom to the interior portion that is bounded by a first seam; a heel outsole patch stitched onto a heel portion of a first face of the midsole; a toe outsole patch stitched onto a toe portion of the first face of the midsole; an insole that is affixed to the bottom of the interior portion; wherein there is a spacing between (i) the heel outsole patch stitched onto the heel portion of the first face of the midsole and (ii) the toe outsole patch stitched onto the toe portion of the first face of the midsole, the spacing extending from the inner side to the outer side and occupying a position intermediate the toe end and the heel end thereby permitting the entire shoe to fold about an axis in the spacing running between the inner side and the outer side; the shoe is configured to fold between (i) an extended state wherein the heel outsole patch and the toe outsole patch are coplanar or approximately coplanar and (ii) a folded state in which the shoe is bent about the axis such that a portion of the upper comprising the toe cavity is tucked into the heel cavity, and the shoe has a maximum outsole ratio OR, wherein OR = D × T × W M wherein D is an average depth of a groove in the toe outsole patch used to stitch the outsole patch onto the toe portion of the first face of the midsole, T is an average thickness of the toe outsole patch, W is a maximum width of the toe outsole patch, and M is a width of the midsole at the point of maximum width of the toe outsole patch, wherein M is greater than W, and wherein the OR ratio of the shoe is greater than 7.0. there is a spacing between (i) the heel outsole patch stitched onto the heel portion of the first face of the midsole and (ii) the toe outsole patch stitched onto the toe portion of the first face of the midsole, the spacing extending from the inner side to the outer side and occupying a position intermediate the toe end and the heel end thereby permitting the entire shoe to fold about an axis in the spacing running between the inner side and the outer side; the shoe is configured to fold between (i) an extended state wherein the heel outsole patch and the toe outsole patch are coplanar or approximately coplanar and (ii) a folded state in which the shoe is bent about the axis such that a portion of the upper comprising the toe cavity is tucked into the heel cavity, and the shoe has a maximum outsole ratio OR, wherein OR = D × T × W M wherein D is an average depth of a groove in the toe outsole patch used to stitch the outsole patch onto the toe portion of the first face of the midsole, T is an average thickness of the toe outsole patch, W is a maximum width of the toe outsole patch, and M is a width of the midsole at the point of maximum width of the toe outsole patch, wherein M is greater than W, and wherein the OR ratio of the shoe is greater than 7.0. D is an average depth of a groove in the toe outsole patch used to stitch the outsole patch onto the toe portion of the first face of the midsole, T is an average thickness of the toe outsole patch, W is a maximum width of the toe outsole patch, and M is a width of the midsole at the point of maximum width of the toe outsole patch, wherein M is greater than W, and wherein the OR ratio of the shoe is greater than 7.0.