FeaturesErgonomic features include a wide and padded seat, a tall and curved mesh back and fixed armrests for continual support and comfortHeight can be adjusted via the gas liftFive wheels on the swivel base to move around easily and freelyRocks back and forth gentlyHeadrest can move up/down and also be removedInvite unparalleled comfort into your working space with this HOMCOM Nylon Ergonomic Rocking Office Chair. In sleek and versatile black, it is made into an ergonomic design, blending a wide and padded seat, fixed mid-rise arms, a high and curved mesh back, which provides prolonged support whilst working and a removable headrest, which can also be removed if you wish. Adjustable in height to set the correct level whilst sitting at your desk, it is finished with five Omni-direction wheels on the rotating base, allowing you to move across the floor with ease. A superb choice to help make your workday easier. DIMENSIONS: 110-120H x 56.5W x 47Dcm. Seat: 45-55H x 46.5W x 47Dcm. Maximum load 135lg, assembly required.