A track and field shoe can include an upper, a sole structure, and a toe plate. The upper includes a medial side portion, a lateral side portion, and a toe box portion. The sole structure is attached to the upper and includes a spike plate. The spike plate has an anterior portion, a posterior portion, and a plurality of spikes. The spikes are configured for penetrating a track surface. The toe plate is attached to an anterior portion of the toe box portion of the upper. One or more portions of the toe plate are exposed from an exterior surface of the upper. The spikes are spaced apart from the toe plate such that the spikes disengage the track surface when the toe plate contacts the track surface.

A turf aerator footwear kit including a footwear body, such as a boot, having an outsole disposed on an entire sole of the footwear body with threaded receptacles disposed in the outsole and a plurality of at least one of a first spike and a second spike, wherein each of the plurality of first spikes and the plurality second spikes is engageable to a respective one of the plurality of threaded receptacles. Each first spike and each second spike has a solid substantially frustoconical shaft and central shank, respectively, with a concave wall between a respective flat top end and flat bottom end and a flat upper end and flat lower end. A plurality of spiking tines coaxially extends from the central shank of each second spike. At least two of a pair of the spiking tines is disposed on diametrically opposite sides of the bottom edge.

A safety slipper (10) includes a stretchable fabric material upper portion (12) and a porous anti-skid lower portion. The upper portion has a foot opening (16) and a profile heel pocket (17). The lower portion (13) is made from a scrim cloth type material having a knit of polyester threads (21) coated with a soft poly-vinyl chloride outer layer (22). The lower portion provides for a cris-crossing pattern or matrix of interconnected nodes (23) with spaces (24) therebetween.

A safety slipper (10) includes a stretchable fabric material upper portion (12) and a porous anti-skid lower portion. The upper portion has a foot opening (16) and a profile heel pocket (17). The lower portion (13) is made from a scrim cloth type material having a knit of polyester threads (21) coated with a soft poly-vinyl chloride outer layer (22). The lower portion provides for a cris-crossing pattern or matrix of interconnected nodes (23) with spaces (24) therebetween.

A sole structure for an article of footwear includes an outsole and a membrane layer. The outsole has a plurality of protrusions that extend from a base layer. The membrane layer extends between the plurality of protrusions and includes at least a portion that is separated from the base layer by a distance. The membrane layer forms an outer surface of the article of footwear, and is configured to elastically deform toward the base layer in response to an applied force.

A sole structure for an article of footwear includes an outsole and a membrane layer. The outsole has a plurality of protrusions that extend from a base layer. The membrane layer extends between the plurality of protrusions and includes at least a portion that is separated from the base layer by a distance. The membrane layer forms an outer surface of the article of footwear, and is configured to elastically deform toward the base layer in response to an applied force.

Disclosed is an improved shoe cover with a bistable latch that allows for easy securing and removal of the shoe cover while providing a strong connection between the shoe and the shoe cover when in use. The shoe cover includes at least one bistable spring band at or around the toe, midsection, or heel of the cover for securing the cover to the shoe. In addition, a secondary attachment mechanism may be employed as well, which may include: a string-like material to encircle the shoe about its center, a semi-rigid structure on the inner-side of the cover; and/or an impressionable material located on or within the inner-side of the cover, so that it is directly exposed to the specialized shoe. The impressionable material will create a mold that is at least partially impermanent, permanent or semi-permanent.

An outsole includes a substantially flat reference surface formed on a lower side of the outsole, and studs projecting downward from the reference surface and each having a projection surface positioned below the reference surface. Midsole hollows are provided in a lower portion of a midsole. The midsole hollows are each defined between an upper portion of the outsole and an associated one of midsole recesses formed in a lower surface of a lower midsole at positions facing upper sides of the studs.

Adjustable traction is provided in a traction cleat by selectively restricting or not the amount of flexure permitted for a dynamic traction element on the cleat. Restricting flexure is alternatively achieved by an adjustably positionable ring or by rotating the cleat to align the dynamic element with different shoe sole topographical features. A dual locking post is provided to reduce the surface area required on the cleat hub for locking structures. The cleat is formed in a two shot molding process that permits elongations of the dynamic traction elements without sacrificing the integrity of the cleat structure.

The invention relates to articles of footwear having traction elements, and systems and methods for manufacturing same. An example shoe includes an upper and a sole plate, the sole plate including a lower surface adapted for ground contact having a first sole portion including first traction elements, the first traction elements having a distal end and a side wall with extensions extending from a central core, and a second sole portion including second traction elements, the second traction elements having at least one geometrical feature differing in one or more aspects from a corresponding geometrical feature of the first traction elements.