Homegear Wheeled Computer Desk Chair / Home Office Chair PVC leather, Sturdy plastic armrests, Hard plastic base Height adjusted by pneumatic gas lift, Tilt-tension control 360-degree swivel wheel Weight: 18.7lbs, Max weight: 220lbs Seating area (inches): 17.7 x 18.9, Back (inches): 17.7 x 18.5, Seat height from ground (inches): 15.7-19.7