Retro Acrylic Hydraulic Lift Adjustable Height Swivel Office Desk Chair Clear (7009) Made of High Quality Acrylic Swivel Seat with Hydraulic Lift and rolling wheels Seat Height :14.5" - 17.5", Seat Depth: 20.5", Seat Width :15.5" Weight Limit 200 Pounds, These Fashion Chic Acrylic chairs are not designed for long time sitting or reclining.