A breathable sole, including a midsole and an outsole; a bottom surface of the midsole has an air chamber, an air inlet channel and a single-way air outlet channel; the air chamber is provided at a heel position; the air inlet channel comprises a dispersed air-collecting channel and an air-guiding channel; the dispersed air-collecting channel is provided at the sole and is provided with air inlet holes; the air-guiding channel is connected with a rear position of the dispersed air-collecting channel and the air chamber; the single-way air outlet channel is a Tesla Valve which has an end connecting to a front position of the air chamber, and has another end provided with an air outlet hole penetrating the upper surface of midsole; the single-way air outlet channel imposes a higher resistance against air flowing from the air outlet hole to the air chamber.

A sole for footwear and footwear including the sole are disclosed. The sole includes a first layer having a plurality of orifices passing through and configured to be connected to an upper of a footwear article and to form an inner environment of the footwear, a second layer coupled to the first layer, having a plurality of chambers and one or more channels or passages fluidly connecting the orifices and chambers. The sole also includes a pressurization device in fluid communication with the channels or passages and is configured to increase the air pressure in the plurality of chambers and regulating valves in fluid communication with the channels or passages to regulate a pressure in the plurality of chambers.

A sole for footwear, including a resilient structural member extending in a direction from toe to heel and having a tread surface, the sole having a plurality of incisions extending transversely to the toe-to-heel direction. The incisions include a first portion extending to a first depth into the sole from the tread surface and a second portion extending to a further depth into the sole from the lower outlet of the first portion. The first portion has a width, measured transversely to the longitudinal extent of the incision, which is smaller than the corresponding width of the second portion. At least the second portion of the incisions is open at the side of the sole.

Sole structures, foot support systems, articles of footwear, and/or other foot-receiving devices include: (a) a first footwear component having a ground-facing surface, wherein a forefoot portion of the ground-facing surface includes arched medial and lateral surfaces and (b) a second footwear component having an upper-facing surface, wherein a forefoot portion of the upper-facing surface includes arched medial and lateral surfaces that face (and optionally contact) the respective arched medial and lateral surfaces of the first footwear component. The first and second footwear components are movably engaged together such that: (a) the arched medial surface of the first footwear component moves with respect to and along the arched medial surface of the second footwear component and (b) the arched lateral surface of the first footwear component moves with respect to and along the arched lateral surface of the second footwear component.

A disposable, low friction, breathable bootie is provided that accommodates the shape and size of a human foot. The bootie is made from a thin, flexible polymer sheet-like material in a generally tubular form. The bootie has a foot portion, a lower leg portion, and an ankle portion therebetween. The bootie includes a series of air vents in the foot portion and lower leg portion to provide airflow to the foot, while such vents are located to avoid key friction points between the foot and the ski boot during the donning and doffing processes. The bootie facilitates donning and doffing a ski boot. The vents provide breathability while the bootie is worn within the ski boot.

An immobility system for a free-fall environment includes an immobility device including at least one suction cup configured to engage the immobility device to a surface, and a valve that, when activated, results in release of the at least one suction cup from engagement with the surface. A remote controller is spaced apart from the valve and is configured to selectably transmit an activation signal to the valve. An immobility device includes at least one suction cup configured to engage the immobility device to a surface, and a valve that, when activated, results in release of the at least one suction cup from engagement with the surface. A receiver at the device is configured to receive an activation signal and activate the valve.

Provided is a shoe sole, wherein ventilation grooves recessed in the thickness direction of the shoe sole are formed in the upper surface part, the shoe sole has a forefoot portion that has an air intake port formed in at least one of a medial side wall and a lateral side wall in the side wall part to be in communication with the ventilation grooves and draw air from outside into the ventilation grooves, the shoe sole has a midfoot portion that has an air outlet port formed in at least one of the medial side wall and the lateral side wall to be in communication with the air intake port through the ventilation grooves and discharge air in the ventilation groove to the outside, and at least a part of the ventilation grooves constitutes an air intake groove extending obliquely rearward from the air intake port.

A sole structure for an article of footwear comprises a base component and a wedge component. The base component has a forefoot region, a midfoot region, and a heel region, and includes a forward base portion and a rearward base portion. The forward base portion of the base component includes a forward lateral flange and a forward medial flange. The wedge component extends from the midfoot region to the heel region and includes a forward portion having a rearward medial flange and a rearward lateral flange. The forward lateral flange of the base component abuts the rearward lateral flange of the wedge component. The forward medial flange of the base component abuts the rearward medial flange of the wedge component.

A sensor system is adapted for use with an article of footwear and includes an insert member including a first layer and a second layer, a port connected to the insert and configured for communication with an electronic module, a plurality of force and/or compression sensors on the insert member, and a plurality of leads connecting the sensors to the port.

A shoe sole, to which an upper member is joined, the shoe sole including a bottom receiving part corresponding to a bottom of the upper member, and a rising part that is formed to rise upwardly from an upper side of the bottom receiving part so as to cover an outer surface of a side of the upper member, wherein the bottom receiving part is formed with vent grooves each recessed in a thickness direction from the upper surface of the bottom receiving part, wherein the rising part is formed with vent holes each penetrating therethrough in a thickness direction of the rising part, and wherein the vent hole is formed to have a vertically elongated shape extending from an upper end side to a lower end side of the rising part, and to be in communication with the vent groove.