You can adjust the shelves to fit different things, and adjust them again whenever you need to. Adjustable shelves help you use your space more efficiently. Extra room above the top shelf where you can keep your books, CDs or DVDs. The side panels act as bookends and keep everything in place. Desk Table top/ Side panel/ Bottom panel: Particleboard, Fiberboard, Particle- and fiberboard with honeycomb paper filling (100% recycled paper), Acrylic paint, Plastic edging Supporting leg: Particle- and fiberboard with honeycomb paper filling (100% recycled paper), Acrylic paint, Plastic edging Cable management/ Back rail/ Shelf/ Front: Particleboard, Paper foil, Plastic edging Drawer side/ Drawer back: Paper foil Drawer bottom:Fiberboard, Acrylic paint Leg:Steel, Epoxy/polyester powder coating Add-on unit-high Side panel/ Partition/ Top panel: Particleboard, Fiberboard, Honeycomb structure paper filling (min. 70% recycled), Acrylic paint, Plastic edging Shelf: Particleboard, Melamine foil, Plastic edging Back panel: Fiberboard, Acrylic paint Notice board: Steel, Epoxy powder coating MICKE Desk Article Number: 802.130.74 Width: 29 ¾ " Height: 4 ¼ " Length: 43 ¾ " Weight: 69 lb 0 oz MICKE Add-on unit-high Article Number: 901.800.25 Width: 23 ½ " Height: 1 ½ " Length: 50 " Weight: 23 lb 6 oz Wipe clean using a damp cloth and a mild cleaner. Wipe dry with a clean cloth.