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. Extra-large worksurface with a built-in cupholder offers ample space to work. Groove for your phone or tablet allows you to keep your device in view as you work. Steel frame offers excellent durability for lasting use.