MooreCo - BLT34434 Ergo Executive Chair is a pneumatically adjustable, ergonomically designed chair that provides the ultimate in comfort. The padded and contoured seat slides in and out from back of the chair from 19" to 22-1/2" deep. Stylish mesh back tilts and features an adjustable lumbar support. The headrest is height adjustable. Executive chair also includes height-adjustable, swiveling armrests. Functions include pneumatic seat-height adjustment, back-height adjustment and tilt tension.