The Fellowes Designer Suites Laptop Riser features four viewing angles to prevent neck and shoulder strain. Unit places laptop at a comfortable height to maximize efficiency, adjusts from flat to a 30° angle, and supports most laptops and docking stations up to 25 lbs. Stabilizing front edge prevents laptop from sliding off unit. Cooling vents help dissipate laptop heat. It provides space for USB hub. Sliding feet let you move unit without damaging surfaces.