ALPHA HOME Office Chair Ergonomic Desk 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, 9 cm thick high resilience foam cushion ensure a comfortable sitting experience for long hours of studying or working Adjustable Desk Chair: Enjoy the seat back freedom to recline up to 130 and lock the backrest at 90, 105, or 130. The headrest can be adjusted up or down