Made of quality ABS that is sturdy enough to hold up to 5 kg . Anti-slip rubber pads are helpful to avoid risking any scratches to your device and ensure stable placement.7 heights of laptop screen can be freely adjusted from 3.9” to 6.2” for a perfect eye level as your wish.The Laptop Stand universally fit for almost all laptops models and sizes from 10 to 15.6inches, such as MacBook, MacBook Air, Macbook Pro, Microsoft Surface, Google Pixelbook, Dell XPS, HP, ASUS, Lenovo, Acer, Chromebook, Alienware and more. It also fits for tablets ,kindle,books from 6 inches to 12.9 inches.