Tangkula Office Massage Chair Executive Ergonomic Vibrating Chair Black Material of office massage chair: PU leather and PVC Load capacity of office massage chair: 396 LBS Seat size of office massage chair: 20.86" x18.11"(W X D) Back Rest Height From Seat: 27.16" Height: adjustable from 18.5" -22.4"; Overall dimension: 27.16" x22.83" x46.06"(Highest)