Legs can rotate 360 degrees in 15 degree increments; you can adjust the height and angle to fit your different positions - sitting on a couch, lying in the bed and even standing at a desk; fits laptop up to 17 inch. This portable laptop desk has 6 knobs. So it can adjust any height and angle preferred. The angle revolve provides the high flexibility just as human. Made of quality aluminum alloy, this lightweight laptop stand folds flat for easy storage and transport; you can enjoy your laptop on a couch, recliner, floor or lawn, at a desk or in the bed. Holes on the tray improve airflow around the laptop to keep it cooler; no need to worry about slower performance, malfunctions, and system crashes caused by overheating. Material: Magnesium aluminum alloy Size of table: 420 x 260mm Length of foot section: 260mm Number of feet: 6pcs Adjustable desktop height : 480 mm