ALPHA HOME Office Chair Ergonomic Office Chair with Retractable Footrest High Back Manager Chair Computer Home Office Chair 90-130° Tilt Angle with 3D Armrest, Adjustable Headrest, Lumbar SupportOffice chair with footrest: Experience ultimate comfort with the ergonomic S shaped structure and double backrest design that perfectly supports your head, back, waist and hip curves, the 9 cm thick high resilience foam cushion ensures a comfortable sitting experience during long hours of studying or working Adjustable office chair: Enjoy the freedom to tilt the seat backrest up to 130 and lock the backrest at 90, 105 or 130. The headrest can be