A footwear article having a vacuum release mechanism is disclosed. The vacuum release mechanism equalizes pressure to release a vacuum created beneath the footwear article, thereby eliminating an undesired retention of the footwear article in high-viscosity materials such as mud or concrete. The vacuum release mechanism includes at least one check valve disposed in at least one fluid passageway formed in a sole of a footwear article. The at least one fluid passageway fluidly connects an exterior environment with an interior of the footwear article.

A footwear article having a vacuum release mechanism is disclosed. The vacuum release mechanism equalizes pressure to release a vacuum created beneath the footwear article, thereby eliminating an undesired retention of the footwear article in high-viscosity materials such as mud or concrete. The vacuum release mechanism includes at least one check valve disposed in at least one fluid passageway formed in a sole of a footwear article. The at least one fluid passageway fluidly connects an exterior environment with an interior of the footwear article.

A footwear article having a vacuum release mechanism is disclosed. The vacuum release mechanism is configured to equalize pressure and release a vacuum created beneath a sole of the footwear article. The vacuum release mechanism mitigates undesired retention of the footwear article in high-viscosity materials such as mud or concrete. The vacuum release mechanism includes at least one sleeve fixedly secured within at least one fluid passageway formed in the sole, which fluidly connects an exterior environment to an interior of the footwear article. A replaceable check valve is removably disposed within the at least one sleeve. An installation and removal tool may be used to engage and disengage the check valve from the at least one sleeve.

A footwear article having a vacuum release mechanism is disclosed. The vacuum release mechanism is configured to equalize pressure and release a vacuum created beneath a sole of the footwear article. The vacuum release mechanism mitigates undesired retention of the footwear article in high-viscosity materials such as mud or concrete. The vacuum release mechanism includes at least one sleeve fixedly secured within at least one fluid passageway formed in the sole, which fluidly connects an exterior environment to an interior of the footwear article. A replaceable check valve is removably disposed within the at least one sleeve. An installation and removal tool may be used to engage and disengage the check valve from the at least one sleeve.

Footwear components apply heat, cooling, and/or pressure to a wearer's foot/leg/ankle. Such footwear includes one or more of: (a) an interior upper layer formed from one or more interior upper component parts; (b) an exterior upper layer formed from one or more exterior upper component parts and engaged with the interior upper layer, wherein the interior and exterior upper layers define an ankle-receiving chamber of the footwear upper; (c) a fluid-filled bladder system including a first fluid chamber located between the interior and exterior upper layers; (d) a heating and/or cooling system having at least a portion engaged with the first fluid chamber; (e) a fluid source component (e.g., pump, compressor, etc.) in fluid communication with the first fluid chamber and configured to supply fluid to the first fluid chamber; (f) a power source; and/or (g) a securing system for releasably securing the footwear upper to a wearer's foot/leg/ankle.

Footwear components apply heat, cooling, and/or pressure to a wearer's foot/leg/ankle. Such footwear includes one or more of: (a) an interior upper layer formed from one or more interior upper component parts; (b) an exterior upper layer formed from one or more exterior upper component parts and engaged with the interior upper layer, wherein the interior and exterior upper layers define an ankle-receiving chamber of the footwear upper; (c) a fluid-filled bladder system including a first fluid chamber located between the interior and exterior upper layers; (d) a heating and/or cooling system having at least a portion engaged with the first fluid chamber; (e) a fluid source component (e.g., pump, compressor, etc.) in fluid communication with the first fluid chamber and configured to supply fluid to the first fluid chamber; (f) a power source; and/or (g) a securing system for releasably securing the footwear upper to a wearer's foot/leg/ankle.

A climate control system for a shoe is provided and includes a pumping assembly, a discharge-end assembly and a suction-end assembly. The pumping assembly is formed in a one-piece structure and includes a first layer structure, a second layer structure and a plurality of supporting structures located inside a chamber formed between the first layer structure and the second layer structure and integrally connected between the first layer structure and the second layer structure. When the pumping assembly is forced to be resiliently compressed, air inside the pumping assembly is driven to flow toward the discharge-end assembly and then flow out of the discharge-end assembly to an interior of the shoe through a plurality of ventilation openings. When the pumping assembly is released to resiliently recover, ambient air is driven to flow toward the pumping assembly through the suction-end assembly. Besides, a related shoe sole is also provided.