Perfect Ergonomics - Places your laptop/monitor into the perfect ergonomic position, comfortable for reading, protects your neck and shoulders from pain, places everything at eye level Tilt Adjustment - 9 level tilt adjustment, easy to find the perfect viewing angle, or comfortable typing position, and pleasant working environment Built-in Folding Legs - Additional 3" height adjustment allows you to easily store a keyboard or mouse underneath; retractable smart phone stand on each side allows for convenient placement and easy access to your cell phone, a great solution to organize your desktop Laptop Cooling - Special cooling knob designed to increase air flow and ventilation for better heat dissipation Solid Construction - Built with high quality ABS and aluminum, supports up to 22 lbs (10kg) weight on it's top. Retractable stopper holds your laptop in place and protects it from sliding off; anti-slip rubber pads reduces scratching and keeps the stand