Patent ID: 8424967

Claim:
A seat for a user, comprising: a non-upholstered seat bearing structure having a contour adapted to a sitting body shape of a user and including a seat area and a backrest area angled relative to one another; a plurality of cushions mounted on the seat area and the backrest area of the non-upholstered bearing structure, each cushion having only little thickness and comprising: a spacer structure having at least two layers, the layers being arranged parallel to each other and being connected to each other by spacer threads; the spacer structure not having any particulate matter therein: a fluid-tight casing in which is arranged the spacer structure, the casing comprising two material webs arranged parallel to each other, the two material webs being connected to each other at their side edge areas; and at least one connection in the fluid-tight casing through which a fluid quantity of air or a liquid fluid inside the casing is varied, wherein a form of the spacer structure resulting under a load of the seat user is freezable by at least one of blocking the connection and applying a vacuum to the inside of the casing, and a firmness of the cushion is regulated by varying a magnitude of pressure inside the cushion with a lower pressure achieving a greater firmness by compressing the spacer structure, and the plurality of cushions are individually adaptable to the load of the seat user.