A seat has a cushion body that elastically supports a seater and a back frame that supports the cushion body from a back side of the seat. The cushion body has a main top panel pad that serves as a cushioning portion. A main top panel resin member is provided on a back side of a pad of the main top panel pad, and the main top panel resin member is fixed to the back frame. A secure attachment clip is assembled to the main top panel resin member. The secure attachment clip is placed in a tuck-in groove formed on the back side of the pad of the main top panel pad.

A vehicle seat for commercial vehicles includes a support structure and at least one cushion element. The at least one cushion element is arranged on the support structure. The support structure includes at least one shell element. The at least one cushion element is formed from an integral foam and has a plurality of openings.