PROBLEM TO BE SOLVED: To provide a cushion in which a device for air pressure adjustment can be disposed inside a flexible support member supporting the lower end side of a plurality of air cells and the flexibility of the support member can be maintained as much as possible.SOLUTION: Since the respective devices for the air pressure adjustment such as motor-driven pumps 70 are respectively attached to the lower surface of the support member 60 and the respective devices for the air pressure adjustment are connected to each other by flexible electrical wiring or respective pieces of air piping P1, P2, P3, P4, P5 and P6, even though the respective devices for the air pressure adjustment are non-flexible ones such as electric motors 70 and the flexibility of parts where the respective devices for the air pressure adjustment are attached in the support member 60 is respectively lost, the area of the part where the flexibility is lost is made smaller compared to the case of housing and integrating the respective devices for the air pressure adjustment inside a single operation box and attaching the operation box to the support member 60 for instance.COPYRIGHT: (C)2008,JPO&INPIT【課題】複数のエアーセルの下端側を支持する可撓性の支持部材内に空気圧調整用機器を配置することができ、しかも支持部材の可撓性を極力維持することのできるクッションを提供する。【解決手段】電動ポンプ70等の各空気圧調整用機器が支持部材60の下面にそれぞれ取付けられ、各空気圧調整用機器は可撓性を有する電気配線または各空気配管P1,P2,P3,P4,P5,P6によって互いに接続されていることから、各空気圧調整用機器は電動モータ70等の可撓性を有さないものから成り、支持部材60において各空気圧調整用機器が取付けられた部分の可撓性がそれぞれ失われるが、例えば各空気圧調整用機器を単一の操作ボックス内に収容して一体化するとともに、その操作ボックスを支持部材60に取付ける場合と比較し、可撓性が失われる部分の面積を小さくすることができる。【選択図】図6