Sophia & William Ergonomic Mesh Office Desk Chair with Lumbar Support & Adjustable Armrest-Black

Oversized heavy duty chair measures: height:40.1"-44.1", backrest height:24.4", back width:25.2", seat depth:20.47", seat width:20.47", maximum weight 300 lbs. Ergonomic Design: S-shaped backrest design of the office chair perfectly fits the curve of human back to reduce the pressure on cervical vertebra and lumbar vertebra. Adjustable: Height adjustable: 40.1”- 44.1” to meet the needs of people in different height. The height of the armrests and lumbar support can be adjusted so that you can find a most comfortable position Flexible: 360° Free swivel for easily communicating between you and your colleagues. Smooth-rolling casters for easily moving to anywhere you want to go with ease and no effort. Stable & Durable: This mesh office chair has been certified by BIFMA and SGS, the durable base safely handling weight up to 300lbs. Breathable Mesh Back: The back and cushion positions are made of breathable skin-friendly mesh. The high-density foam cushion provides maximum comfort whether you are sitting for long hours in the office or at home. Tilt Function & Lock Upright: Tilt tension knob locks any angle between 90-125 degree. There are different modes available: 90°comfortable working, 105°relaxing reading, watching movie 120°. Desk Chair with Flip-up Arms: The Adjustable armrests can move up and down and the comfortable armrests with soft padded can relieve the discomfort of the elbow area. After use, you can retract the arms and put the ergonomic office chair under the desk to save space. Adjustable Headrest - This chair's adjustable headrest allows you to rotate it to a specific angle, provides support and comfort while reducing pressure on your neck and shoulder, and promotes a healthy posture.