Ergonomic: The desk chair features a wide and padded seat, tall back and fixed armrests, allowing you to sit and work comfortably with support all day long. Also rocks back and forth. Moving Headrest: Goes up and down, allowing you to set to a position best for you. Gives your head and neck support when needed sitting on the computer chair. Adjustable Height: Controlled by gas lift, allows you to set to a position which makes you work comfortably and on level with your desk. Wheels: Five castor wheels, can move around easily - perfect for when you're seated. Comfy chair also fully swivels. Dimensions: 118-128H x 63W x 64Dcm. Seat: 48-58H x 52W x 50Dcm. Maximum Load 100kg.