Solid Construction: made with strong steel and aluminum. Designed for Ergonomic Comfort, allowing users to elevate the screen to eye level for the optimum viewing angle. Provides variable height/angle adjustment for optimal viewing. Height adjusts from 5.9' - 7.9'; angle adjusts from 0° - 45°. Open Ventilation Design helps promote air circulation, aiding laptop performance and battery life. Under-Base Storage provides space to stow external peripherals for a tidy desktop environment. Anti-Slip Silicon Pads protect laptop from being scratched and keep device in place while you work. Safety Ledge Stopper helps prevent devices from slipping. Works with up to 16' laptop. 17.6 lbs. (8 kg) max. weight.