Adjustable Size: Adjustable for laptop width with thickness between 14mm and 66mm, you can adjust the screw to tighten to the right size. Anti-Slip and Stable: The excellent stand for laptop provides plenty of silicone pads like in the U-type groove and under the dock to prevent your device from being scratched and staying on the desk. Excellent Material: By making of solid aluminum alloy, same matte texture as Macbook surface. Vertical storage protects your Macbook away from accidental water splashes. Space Saving: Put your macbook in this vertical stand, not only free up your desk space and also be a stylish decoration. Makes your workplace or office clean and well organized. Wide Compatibility: Compatible with Apple MacBook Pro / Air, iPad, Microsoft Surface, Dell, HP, Samsung, Huawei, Lenovo, Sony, Asus, phone and tablet or some books.