Solid Aluminum Construction: made with strong, lightweight aluminum, a recyclable and sustainable material. Designed for Ergonomic Comfort, allowing users to elevate the screen to eye level for the optimum viewing angle. Collapsible Portability: stand quickly folds flat to fit easily into laptop bag; weighs only 0.53 lbs. (0.24 kg). Provides 7 levels of height/angle adjustment for optimal viewing. Height adjusts from 2.24"-5.83" (57 mm-148 mm); Angle adjusts from 12 -44 . Open Ventilation Design helps promote air circulation, aiding laptop performance and battery life. 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 virtually any size laptop, supporting laptop screen sizes up to 16". 11 lbs. (5 kg) max. weight. What's in the box 1 x Laptop Riser