Abstract: A vehicle seat assembly includes a seat frame structure having a riser and a movable portion movable in relation to the riser in fore and aft directions with respect to a longitudinal axis of a vehicle. A seat cushion assembly including an open-cell foam seat cushion is mounted on the movable portion. The seat cushion includes a plurality of air channels therein extending from a bottom surface to a top surface thereof. The seat cushion is of sufficient thickness and density to support an occupant thereon. The seat cushion assembly includes a seat cushion cover material covering at least the top surface of the seat cushion. The seat cushion cover material is constructed and arranged to permit air to pass therethrough. A seat back frame is coupled to the movable portion of the frame structure. A seat back pad assembly is mounted on the seat back frame.