An article of footwear includes an outsole that has a bottom portion and a medial arch portion extending upward from the bottom portion. The medial arch portion of the outsole has a base and a plurality of protrusions extending outward from the base. The plurality of protrusions are arranged in vertical alignments. In each one of the vertical alignments, at least one protrusion of the plurality of protrusions is closer to the bottom portion and has a larger effective diameter than at least one other protrusion of the plurality of protrusions that is further from the bottom portion.

A sole structure for an article of footwear comprises a sole plate that has a forefoot region, and a stiffness enhancing assembly disposed in the forefoot region of the sole plate. The stiffness enhancing assembly further comprises a compression member disposed at a foot-facing side of the sole plate, and a tensile member disposed at an opposite side of the sole plate from the compression member. The tensile member is spaced apart from the compression member by a first distance in a first portion of a flexion range during dorsiflexion of the sole structure, and interferes with the compression member during a second portion of the flexion range that includes flex angles greater than in the first portion of the flexion range.

A sole assembly for an article of footwear comprises a sole plate with a foot-facing surface with a recess disposed in the foot-facing surface. An insert plate is disposed in the recess. A length of the insert plate between anterior and posterior ends of the insert plate is less than a length of the recess. The insert plate flexes free of compressive loading by the sole plate when a forefoot portion of the sole assembly is dorsiflexed in a first portion of a flexion range, and operatively engages with the sole plate when the forefoot portion is dorsiflexed in a second portion of the flexion range that includes flex angles greater than in the first portion of the flexion range. The sole assembly is dorsiflexed, for example, when the forefoot portion is flexed in accordance with toes bending toward the top of the foot.

A sole structure for an article of footwear having a heel region, a mid-foot region, a forefoot region, an interior region, and a peripheral region. The sole structure including a bladder having a chamber including an arcuate segment extending around the heel region, a first segment extending along the peripheral region on a medial side of the sole structure from the arcuate segment to a first terminal end in the forefoot region, and a second segment spaced apart from the first segment across a width of the sole structure and extending along the peripheral region on a lateral side of the sole structure from the arcuate segment to a second terminal end in the forefoot region. A peripheral outsole extends along the chamber and a first cushion is disposed between the first segment and the second segment and is exposed through an opening of the peripheral outsole.

An article of footwear includes an upper having a knitted component formed of unitary knit construction. The knitted component also includes an external surface. Moreover, the footwear includes a sole structure that is coupled to the upper. The sole structure includes an intermediate member with a first surface. The first surface is attached to the external surface of the knitted component. The sole structure also includes at least one stiffener that is attached to the intermediate member. The intermediate member is disposed between the stiffener and the external surface of the knitted component.

An item of footwear for magnetotherapy comprises a lower sole in which there is defined a tread surface, an intermediate container which can be received in an opening which is defined in the lower sole, a magnetic field generator, a control unit, a battery, an inner sole which is or can be placed over the intermediate container and a vamp structure which is connected to the lower sole. The intermediate container is produced from material having greater rigidity with respect to the lower sole and comprises respective recesses which are intended to receive the magnetic field generator, the control unit and the battery, respectively.

A plantar shaped shoe sole constituted by layers includes a mid-sole constituted by a body and elastically compressible protrusions protruding downward from a body lower surface, each having an axial cavity and first holes. An upper surface of the body has holes associated with first holes of each protrusion. First protrusions are arranged at a central area of the heel and forefoot of the body and have a greater protruding height than second protrusions. First and second protrusions have first and second apices, respectively, forming anatomically-contoured curved surfaces, formed at protrusion free ends, opposite the body lower surface. Each axial cavity extends from the upper surface to their respective apex. There are more forefoot region first holes of first protrusions than second protrusions. The sole includes a tread and an elastic plantar supporting structure, at least one seat on the upper surface wherein the apices are positioned on the seat.

A mould for producing footwear by direct injection onto an upper of a sole, including a tread and a midsole, wherein the midsole is composed of a first layer and a second layer. The mould includes a base, a pair of first half-rings, a lid, a pair of second half-rings and a mould last. The first half-rings are designed to be arranged close together such that they abut against the base and against the lid, so as to form a first mould cavity for moulding the first layer (6) of the midsole. While the first half-rings are abutting against the base, the second half-rings are designed to be arranged close together, such that they lie over the half-rings and abut against the upper, fitted onto the mould last, so as to form a second mould cavity for moulding the second layer of the midsole. The first half-rings are provided with guiding means so that they can be moved away from and towards each other and rotate about an axis of rotation. Also a method for producing footwear by direct injection onto an upper, which may be performed by means of the mould.

Articles of footwear and soles are disclosed. The article of footwear may include an upper, a midsole with a midsole core and a midsole rim, and an outsole. The midsole core may be manufactured from a plurality of portions that are arranged in a particular order before being placed in a mold. The plurality of portions may be arranged so that the portions at least partially overlap each other. The plurality of portions may be arranged in longitudinal strips. The plurality of portions may be arranged in lateral portions. The plurality of portions may be adhered to each other before being placed in the mold. The mold may apply heat and pressure for a predetermined amount of time to form the midsole.

An article of footwear that has an upper attached to a sole structure. The sole structure includes a midsole that is positioned between an insole and an outsole. The article of footwear also includes a plate that is removably received within a cavity formed within the midsole. The insole is configured to cover the plate within the cavity. The plate includes a reinforcing member that comprises carbon fiber.