Ikea Jerker Computer Desk with 3 desktop surfaces, side swivel shelf (1 extra shelf included), 3 side wire shelves. Main surface has 2 extensions which slide in and out on either side. Modular desk system allows full customization, including stand-up height, and is extremely useful in computer and sound studio environments. Can be arranged as a standing or treadmill desk. Can accommodate multiple monitors, keyboards, etc. at one time. Model was discontinued 8 years ago and is highly sought out for it's easily customizable and user-friendly design.