A cushion comprises a cushion body and a interlayer.The cushion body is composed of soft materials, including a top layer, a bottom layer and most air bags.The top layer adheres to the bottom layer and comprises a plurality of openings separated by phases.The airbags are respectively arranged at the openings.Each air bag comprises a capsule which closes the corresponding opening and at least one external thread formed on the peripheral surface of the capsule.The interlayer is clamped between the top layer and the bottom layer, and comprises ribs extending between two adjacent openings.Each rib stretches a part of the top layer and the bottom layer to form a channel connecting two adjacent openings.The external thread can strengthen the lateral resistance of the airbag and avoid tilting, ensure that the user's buttocks are supported by the airbag, and improve the riding comfort.一種坐墊，包含一墊體及一夾層。該墊體由軟性材料構成，包括一頂層、一底層，及多數氣囊。該頂層貼合至該底層，並包括多數相間隔的開口。該等氣囊分別設置在該等開口。每一氣囊包括一封閉所對應開口的囊體，及至少一形成於該囊體外周面的外螺紋。該夾層夾設在該頂層及該底層間，並包括多數在相鄰二個開口之間延伸的肋條。每一肋條將該頂層及該底層撐開一部分不貼合，而形成一連通兩相鄰開口的通道。該外螺紋能補強該氣囊橫向的抵抗力而避免傾斜，確保使用者的臀部各位置都有氣囊支撐，提高乘坐的舒適度。
