Aidata Ergonomic Sit-Stand Mobile Computer Desk Work Station Cart with Keyboard Tray, CPU Holder, Printer Shelf, Mouse Pad and Cup Holder (Model: PCC004P) Easily adjust height from sitting to standing position with the Easy Touch lever to create an ergonomic work station. Gas Spring Pole adjusts height from 28 to 37.5. (keyboard tray) and 31.5 to 41 (work surface). Work surface measures approximately 23.5W x 14.5D. Keyboard tray measures approximately 27W x 10D. All shelves are made of durable ABS plastic in a black matte finish for a modern look which is easy to care for. Retractable Mouse Pad and Cup Holder swivel out of the way when not in use. Stable H pattern base measures approximately 26W x 25D and features 4 Lockable Casters for easy movement. Safety bar/handle with rubber grip makes it easy to hold when relocating the cart. CPU Shelf And Printer Shelf measures 16W x 10.5 D. Easy assembly with easy to use cable management included.