Abstract: A shoe includes a knit upper and a sole secured to the knit upper. The knit upper is formed with a first type of knit structure knitted with a thermoplastic yarn in a first area. The first area is in at least the toe region of the knit upper. In a second area including at least the medial and lateral metatarsal regions of the knit upper, the knit upper is formed with a second type of knit structure knitted with a second yarn having a higher melting temperature than the thermoplastic yarn. A rear boundary line of the first area and a forward boundary line of the second area define a boundary line between the first and second areas.

Abstract: A shoe includes a knit upper and a sole secured to the knit upper. The knit upper is formed with a first type of knit structure knitted with a thermoplastic yarn in a first area. The first area is in at least the toe region of the knit upper. In a second area including at least the medial and lateral metatarsal regions of the knit upper, the knit upper is formed with a second type of knit structure knitted with a second yarn having a higher melting temperature than the thermoplastic yarn. A rear boundary line of the first area and a forward boundary line of the second area define a boundary line between the first and second areas.

Abstract: A shoe includes an outsole having a heel region, a midfoot region, a metatarsal region, and a toe region. The heel region extends longitudinally from the heel end to the midfoot region, the midfoot region extends longitudinally from the heel region to the metatarsal region, and the toe region extends longitudinally from the toe end to the metatarsal region. The outsole has a medial side region, central region, and a lateral side region. A bottom surface of the outsole defines a concavity extending longitudinally from within the heel region to at least within a portion of the midfoot region. The concavity extends laterally within the central region. The concavity has a width at its widest point that is at least between 50% and 80% the width of the outsole at that point.

Abstract: A shoe having a sole. The sole includes a midsole including multiple midsole portions. A first midsole portion is an inner portion of a first midsole material. A second, midsole portion of a second midsole material circumscribes the first midsole portion, and a third midsole portion formed of a third midsole material circumscribes the second midsole portion. The second midsole portion has a greater durometer hardness than the first midsole portion. The third midsole portion has a different durometer hardness than the second midsole portion. The second midsole portion is of a different color than each of the first midsole portion and the third midsole portion. An outsole secured to the midsole is sufficiently translucent so that the first, second, and third midsole portions are visually discernable one from another by a person of normal, unaided vision viewing the outsole.

Abstract: A shoe includes an outsole having a heel region, a midfoot region, a metatarsal region, and a toe region. The heel region extends longitudinally from the heel end to the midfoot region, the midfoot region extends longitudinally from the heel region to the metatarsal region, and the toe region extends longitudinally from the toe end to the metatarsal region. The outsole has a medial side region, central region, and a lateral side region. A bottom surface of the outsole defines a concavity extending longitudinally from within the heel region to at least within a portion of the midfoot region. The concavity extends laterally within the central region. The concavity has a width at its widest point that is at least between 45% and 55% the width of the outsole at that point.

Abstract: A shoe having a sole. The sole includes a midsole including multiple midsole portions. A first midsole portion is an inner portion of a first midsole material. A second, midsole portion of a second midsole material circumscribes the first midsole portion, and a third midsole portion formed of a third midsole material circumscribes the second midsole portion. The second midsole portion has a greater durometer hardness than the first midsole portion. The third midsole portion has a different durometer hardness than the second midsole portion. The second midsole portion is of a different color than each of the first midsole portion and the third midsole portion. An outsole secured to the midsole is sufficiently translucent that so that the first, second, and third midsole portions are visually discernable one from another by a person of normal, unaided vision viewing the outsole.

Abstract: A shoe includes a sole and an upper secured to the sole. The sole has a heel outsole member, a forefoot outsole member, a heel member, a chassis member, a heel cushion, a forefoot cushion, and a shank. The heel member extends downwardly from the chassis and the heel cushion is within an open top cavity in the heel member. The chassis member includes a through heel opening and a through forefoot opening with the heel opening overlying the open top heel cavity of the heel member. The heel cushion is in the heel opening of the chassis member. The forefoot cushion is in the forefoot opening of the chassis member. The shank has a through heel opening overlying the heel through opening in the chassis member. The heel outsole member is coupled to the heel member. The forefoot outsole member is in contact with the forefoot cushion.

Abstract: A knitted shoe upper includes a unitary one-piece knitted element with an integrated tongue. The upper also includes a lacing system including a medial side eyestay and a lateral side eyestay. The medial side eyestay includes a plurality of medial side eyelets, and the lateral side eyestay includes a plurality of lateral side eyelets. The medial and lateral eyestays are configured such that a single shoelace can be placed through each of the plurality of lateral and medial side eyelets without extending through the knitted element.