Six vibrating massage points in the backrest and seat help ease muscle tension while you work, controlled by a remote that stores in the side pocket for quick access. A high backrest with a 21 x 28.5 in support area, wide 22.5 x 21 in seat, and 7-in thick sponge cushion create a spacious, cushioned sitting surface for extended use. The gas lift adjusts seat height from 20.5 to 24.5 in to match different desks, and a height adjustment lever and tilt tension handle let you fine-tune your sitting angle. A gentle rocking function allows you to lean back for short breaks without leaving your workstation. Smooth-rolling wheels and a 360° swivel seat make it easy to move between tasks, while a sturdy 5-claw metal base and gas lift support up to 500 lbs for stable seating.