Foot support systems include a fluid flow regulator and/or valve that: (a) can operate as a stop valve to stop transfer of fluid between a first fluid container and a second fluid container, (b) can open in a controlled manner to allow transfer of fluid from the second fluid container to the first fluid container, (c) can open to equalize pressure in the first and second fluid containers, and (d) can act as a check valve to enable flow of fluid from the first fluid container to the second fluid container when/if gas pressure in the first container exceeds that in the second container by a predetermined amount. Additional features relate to fluid flow control systems and methods, systems and methods for changing and controlling the crack pressure of a valve (e.g., a check valve), and/or systems and methods for matching foot support pressure features in two different sole structures.

Hot melt sequins and methods of applying these sequins are disclosed. Sequins can be arranged in various patterns. Sequins can be arranged in dispersive patterns. Sequin patterns can be used to create gradients on the outside of an upper. The sequins can be used to attach two layers where the density of the sequins used to attach the layers can affect thermal properties, flexibility and relative motion between the layers.

An article of footwear includes an upper and a sole coupled to the upper. The article of footwear includes an inflation system. The inflation system includes an inflatable bladder, a pump in fluid communication with the bladder, and a control circuitry operatively linked to the pump. The pump adjusts the air pressure of the inflatable bladder. The control circuitry receives a command signal from a remote device, and upon receipt of the command signal, the control circuitry transmits an actuation signal to the pump to adjust the air pressure of the inflatable bladder.

Foot support systems include a first foot support bladder, a fluid tank, and a fluid distributor. The fluid distributor's body may have: (a) first and second solenoid mounts, (b) a main fluid distribution channel in fluid communication with the first and second solenoid mounts, (c) a tank channel in fluid communication with the first solenoid mount, (d) a first foot support bladder channel in fluid communication with the second solenoid mount, (e) a first foot support connector connecting the first foot support bladder with the first foot support bladder channel, and (f) a tank connector connecting the fluid tank with the tank channel. First and second solenoids are engaged with the fluid distributor at the first and second solenoid mounts, respectively. In some examples, the fluid distributor may include a third solenoid mount and a second foot support connector for use with a second foot support bladder.

An adaptive fluid system for an article of footwear is disclosed. The adaptive fluid system includes a fluid chamber that provides cushioning and shock absorption for a foot. The adaptive fluid system includes an adjustable pressure regulating valve that may be used to control the pressure of the fluid chamber. The adaptive fluid system includes a valve that prevents fluid from escaping from a fluid chamber during use.

An article of footwear may include an upper with an outer layer, an inner layer, and a chamber element positioned at least partially between the outer layer and the upper layer. The chamber element may be formed of two layers of a transparent colored polymer material and may be sealed to enclose a fluid. The chamber element may also have a plurality of subchambers. The outer layer may have a plurality of apertures. Each subchamber may protrude at least partially through a corresponding one of the apertures.

Bladders for footwear uppers, footwear uppers including the bladders, articles of footwear including the bladders, and/or methods of making and using such bladders are described. At least one bladder chamber is provided in the instep and/or tongue area of the upper/article of footwear. In some examples, force applied to the instep based bladder chamber(s) moves fluid to one or more additional bladder chambers located in the arch and/or midfoot areas of the upper/article of footwear, and/or other areas of the wearer’s foot. This movement of fluid increases fluid pressure and/or volume in the arch, midfoot, and/or other areas of the wearer’s foot to provide additional support.

Footwear uppers include a footwear upper base having an instep region; one or more lace-engaging components located at a first side of the instep region; and one or more lace-engaging components located at a second side of the instep region. A bladder at the instep region includes: (i) a tongue and/or instep chamber, (ii) a first sealed seam region extending along a first side edge of the bladder, and (iii) a second sealed seam region extending along a second side edge of the bladder. The tongue and/or instep chamber extends between the sealed seam regions. A lace may apply a force to the tongue and/or instep chamber of the bladder. This force may move fluid from the tongue and/or instep chamber to a heel and/or ankle support chamber of the bladder. The lace may extend through a lace-engaging opening provided in a seam of the bladder.

Footwear upper components include a fabric element and a bladder component that defines a sealed interior chamber. The bladder component includes: (a) a first major surface engaged with the fabric element, wherein this first major surface defines at least part of a first perimeter seam surface and at least part of a first surface of the sealed interior chamber, (b) a second major surface opposite the first major surface, wherein this second major surface defines at least part of a second perimeter seam surface opposite the first perimeter seam surface and at least part of a second surface of the sealed interior chamber opposite the sealed interior chamber's first surface, and (c) and a fluid chamber between the first and second major surfaces. The first major surface (and optionally the second major surface) may include texturing, e.g., texturing corresponding to texture present on a surface of the fabric element.

Footwear uppers include a footwear upper base formed from one or more component parts and including: (i) an instep region including at least one of a tongue base region or instep base region and (ii) a heel-containing region. A bladder is engaged with the footwear upper. The bladder includes: (i) at least a first instep chamber engaged with the instep region, (ii) at least a first heel and/or ankle support chamber engaged with the heel-containing region, and (iii) a first fluid line connecting the first instep chamber and the first heel and/or ankle support chamber and placing the first instep chamber in fluid communication with the first heel and/or ankle support chamber. Fluid moving from the first instep chamber to the first heel and/or ankle support chamber (e.g., under force applied by a footwear securing strap) provides further support for the wearer's heel and/or ankle.