Seat cushion with connector

The cushion for a motor vehicle seat has a releasable retainer (3) with a wire frame (33) to fit behind a pile button (31). The wire frame has a pair of opposing shanks (40) which are closed at one end an open at the other. The shanks ends have eyes (34) to engage a formation on the cushion shell (22). The retainer can have a manual adjuster (32) to release it.