Ergonomic Design Easy to raises your laptop height, give you a better gesture, and prevent back neck, and wrist pain. Good Heat Dissipation Hollowed-out design to increase airflow to help keep laptops running cooler and prevent overheating and crashes. Adjustable Height It offers 5-level adjustable height from 7.5cm to 10.5cm, you can adjust it to get a more comfortable viewing angle. Anti-slip Design Anti-slip protective pads protect your laptop from scratch and keep your laptop in place without wobble. Lightweight & Portable Folding design, ultra-thin and lightweight, easy to put in your laptop bag and backpack, portable to carry while you are traveling or on business. Adopting high-quality aluminum alloy material with sand-blasted and silver anodized finish, exquisite and stylish. Perfect laptop companion for home, school, office, or traveling.