A seat assembly is provided having a seat bottom and at least one bladder mounted to the seat bottom adjacent a forward surface and filled with a compressible material. The bladder is moveable between a storage position and at least one leg-support position. A valve is in fluid communication with the at least one bladder. A vacuum pump in fluid communication with the valve. The compressible material is compressed under vacuum pressure generated by the pump when the valve is closed in the storage position. The compressible material is expanded when the valve is open to move the at least one bladder to the leg-support position.

A seat cushion includes a plurality of inflatable cells, a pumping mechanism, and a manifold or valve system fluidly between the pumping mechanism and the inflatable cells. The manifold or the valve system, which may include a clutch and a motor, connect the pumping mechanism with, the inflatable cells such that a plurality of zones are created. A valve assembly can include a plurality of valves and is adjustable among at least three valve configurations to vary fluid connections to the inflatable cells to produce rearwardly advancing waves. The pumping action produced by the inflation and deflation of the inflatable cells assists in pumping blood in a user's legs back toward the heart.

An airbag includes a bag portion including two sheet members which are attached to each other. The bag portion provided with the sheet members which are attached to each other includes a peripheral rim portion having a plurality of bent side portions, the bent side portions which each is bent by filling with air inside the bag portion, the bent side portions, the bent side portions which each is formed with a groove-shaped constriction at a surface of the bag portion which is configured to inflate by filling with air.

A backrest portion supported, such as to be pivotable around an axis extending along its width direction center line, by a base, a left arm holding portion projecting forward from a left side portion of the backrest portion and supported, such as to be pivotable up and down around its base end portion, by the backrest portion, a right arm holding portion projecting forward from a right side portion of the backrest portion and supported, such as to be pivotable up and down around its base end portion, by the backrest portion, a left leg holding portion extending downward from a vicinity of a left side portion of a front edge of a seat portion at a front side of the base and supported, such as to be pivotable up and down around its upper end portion, by the base, and a right leg holding portion extending downward from a vicinity of a right side portion of the front edge of the seat portion at the front side of the base and supported, such as to be pivotable up and down around its upper end portion, by the base are included.

A seat cushion assembly includes a base defining a leg support and a support portion recessed relative to the leg support, and an air pad assembly positioned on the recessed support portion, the air pad assembly including a plurality of independent air support zones that are configured to be separately inflated and deflated.

A backrest portion supported, such as to be pivotable around an axis extending along its width direction center line, by a base, a left arm holding portion projecting forward from a left side portion of the backrest portion and supported, such as to be pivotable up and down around its base end portion, by the backrest portion, a right arm holding portion projecting forward from a right side portion of the backrest portion and supported, such as to be pivotable up and down around its base end portion, by the backrest portion, a left leg holding portion extending downward from a vicinity of a left side portion of a front edge of a seat portion at a front side of the base and supported, such as to be pivotable up and down around its upper end portion, by the base, and a right leg holding portion extending downward from a vicinity of a right side portion of the front edge of the seat portion at the front side of the base and supported, such as to be pivotable up and down around its upper end portion, by the base are included.

An air cushion device for a seat includes at least one first air cushion and a second air cushion, first and second air inlets, first and second air ducts, and a device preventing the second air duct from being pinched off by a fixing wire of a seat cover.

A convertible seat including: a support frame; and a user support having a support surface on one side defining a rounded periphery, the user support being movable from a first configuration supported by the support frame with the rounded periphery presented upwardly, to a second configuration supported by the support frame such that a seat or seat base is presented upwardly, the seat or seat base being substantially flat or at least less rounded than the rounded periphery, with the support surface being stowed substantially below the seat or seat base in the second configuration.

The seat allows the attainment in a single unit both the healthy balance/core-strengthening of a fitness chair and a conventional chair.

A fluid-fillable cushion comprises upper and lower layers, a first chamber and a second chamber and a discrete pressure distributing unit situated between the upper and lower layers, said pressure distributing unit providing a fluid connection between at least the first chamber and the second chamber. Such a cushion reduces leaks and allows controlled pressure equalisation between the chambers. Also disclosed is a process for making such cushions and seating products comprising such cushions.

Systems herein provide a customizable camp chair cover that may provide additional functional features and/or aesthetic elements to portable seating. In some examples, portions of the camp chair cover are inflatable and/or receive inserted inflation devices for customized support at various areas of seating when attached to the chair. Portions of the camp chair cover may be configured to provide access to portions of the chair and/or accessories. The camp chair cover may also be customized to provide team logos, designs, colors, and other aesthetic elements.