The chair is Cushioned backrest designed and seat upholstered in black bonded leather make you feel comfortable during long time working.360 degree swivel and multi-direction wheels, the whole chair can rock back and forth, tilt and lock mechanism with titling tension knob, pneumatic seat height adjustment will match different stature.Streamlined back which fitted to the human spine is prefect for workplaces like home, office, conference room and reception rooms.Size of back 20.5" X 20.5" (L x W), size of seat 19.8" X 20.5" (L x W), seat adjustable height 16.0" to 19.5", maximum weight 250lbs.High-quality PU leather, waterproof and wear resistant, long time use does not fade. Strong five-star feet provide good support.