The present invention relates to a suspension system for a vehicle seat. The system comprises a top portion (9) and a first part (1) having a base portion (2), means (3b, 20) to receive the top portion and means (3, 4) to allow movement of the base portion (2) and top portion (9) towards and away from each other. The system further comprises a second part consisting of a spring element (10, 14) adapted in use to control movement of the base portion (2) and top portion (9) towards and away from each other. The top portion (9) and the second part (10, 14) are, in addition, releasably connected (13, 11a, 20) to the first part (1). This suspension system allows for flexibility in the manufacturing process and the replacement of parts.