See Pricing Guide & Specifications Here. The Humanscale Freedom Chair with Headrest is an ergonomic chair unto itself with its innovative counter-balance mechanism that, in conjunction with your body weight, instantly aligns its recline tension to your posture. The idea behind the chair, one that originated with designer Niels Diffrient, is to encourage frequent movement without requiring you to manage the chair's adjustments each time you move. The height adjustable headrest moves forward when you recline to cradle your head and maintain near constant eye contact, while a pivoting backrest offers vital lumbar support throughout the full range of recline. Contoured cushions that reduce the risk of pressure points, synchronous armrests that prevent uneven arm positioning, and a 15-year manufacturer's warranty makes the Humanscale Freedom Chair with Headrest a mainstay of any office.