Customize your work environment for comfort with the tray table. The desktop is easily adjusted with a pneumatic-lift lever for heights ranging from standard dining, counter or bar, and everything in-between. Locking casters ensure stability once the desk is positioned where desired. Enjoy the benefits of standing while working, studying, or gaming which include additional calories burned, improved blood flow, and simply the comfort of stretching after long periods of sitting. Assembly is quick and easy.