Made of Aluminum: This multifunctional notebook stand is made of pure aluminum alloy, all of which are cut from 3.5 mm aluminum alloy plates. The base is made of 3.5mm aluminum plate, which can ensure that the bracket is stable and sturdy. The base can free up space for you as you can put the keyboard and mobile phone books on it. Ergonomic: This laptop stand is ergonomic. You use it to elevate the height of your laptop keyboard. You can adjust the height and angle according to your needs, which keeps your sight vertical to your laptop’s screen. Or you can use an external keyboard so that you can put your laptop on a further position to protect your eyes. Exclusive Patent: The laptop stand is our factory's latest design with exclusive patent. It fully meets the needs of users' different preferred heights and angles. Suitable for 11-17 inch laptops, including Dell, Apple, Lenovo, Samsung and other laptops. Adjust Tilt: The angle/tilt can be adjusted from 0°to 45°. You can freely adjust the height and angle of your notebook according to your height and preferred posture. This allows you to use the notebook easily and comfortably for a long time. Adjust Height: The height can be adjusted from 5.5 inches to 8.3 inches. Using this laptop riser, you can type on your laptop keyboard comfortably by adjusting the height and angle of the notebook keyboard.