Designer Suites Laptop Riser features five viewing angles to prevent neck and shoulder strain. Riser places laptop at a comfortable height to maximize efficiency, adjusts from flat to a 30 degree angle, and supports laptops and docking stations up to 17" and 25 lb. Stabilizing front edge prevents laptop from sliding off the riser. Cooling vents help dissipate laptop heat. Riser provides space for a USB hub. Sliding feet let you move the riser without damaging surfaces.