**welcome custoize and small wholesale) This is Laptop stand. The material is aluminum and alloy. It is vertical and can save the space easily. It has two kinds. Singel SD and double SD. You can choose by himself according to the using requirement. Features: 1.Vertical Laptop Stand. space-saving stand to free up valuable things on your workstation or desktop. 2.Adjustable Size. Come with 2 different double removable silicone cushion adapter, suitable for laptop with thickness from 0.55 inch to 0.74 inch. 3.Heat Sink. It cools by facilitating better air flow and convection all around the notebook. 4.Clean your desktop. The cradle stand frees up space on the desktop. 5.Scientific Design. Single piece aluminum design provides solid stability