Mobile Sit-to-Stand Desk features a pneumatic system with a foot pedal to let you effortlessly adjust the height with no preset limits. Heavy-duty casters glide across floors for smooth mobility. Two of the casters are lockable prevents rolling to keep your desk securely in place. Durable platform is protected by a melamine surface for easy cleaning. Large worksurface with a keyboard platform offers plenty of space to work efficiently. Steel frame offers excellent durability for lasting use.