1) Seat Cover : PVC, Fabric, Microfiber, Carbon 2) Metal Frame and mold sponge 3) Single or double adjustors and sliders OUR COMPANY IS ... . OUR MAIN PRODUCTS ARE AS FOLLOWS: RACING SEAT, RACING SIMULATOR, BOAT SEAT, RACING OFFICE CHAIR, GO CARK SEAT, ELECTRIC AUTO SEAT, ELECTRIC SCOOTER SEAT. PVC or Fabric Adjustable Racing Car Seat