Abstract: A ventilated seat assembly including a trim cover, an enclosure, a spacer, and a cushion is disclosed. The enclosure includes a top portion formed from an air-impermeable material and a bottom portion formed from an air-impermeable material. One of the top portion and the bottom portion includes an opening configured to be coupled to an air mover. The top portion includes a plurality of holes for allowing air to move between the trim cover and the enclosure. The spacer is located within the enclosure and includes a plurality of resilient fibers disposed between an upper and lower netting layer. The spacer defines an air space within the enclosure that allows for the movement of air in any direction through the enclosure. The spacer is sufficiently stiff to maintain the flow of air through the enclosure when the seat is occupied. The cushion supports the enclosure.