We're serious about comfort. The high, wide, contoured back takes the pressure off your lower spine. Armrests slope slightly down in the back for the most natural and comfortable support. The "waterfall" front edge of the seat takes the pressure off your thighs, so your blood keeps circulating and you stay alert and focused. The patented Kinemat tilt mechanism lets your neck, shoulders, hips, knees, and ankles pivot naturally. The Aeron chair moves effortlessly with your whole body, as if your body were telling the chair what to do.