Features: Ergonomic design, 9-gear adjustable height helps you to choose a perfect and comfortable angle for your eyes and cervical spine, then you can get rid of cervical vertebrae discomfort. Foldable design, easy to carry and use. Triangular structure with damping joints, more stable, strong load-bearing capacity. The anti-slip silicone pads enhance friction, prevent device from sliding downward, effectively avoid device wear. Designed with detachable cooling fan, better heat dissipation effect. Equipped with two mobile phone stands, free your hand. The hollow-out design at the bottom enhances air circulation and speed up heat dissipation. Specification: : OImaster Color: Black Adjustable angle: 9-gear Applicable device: 12-17 inch laptop, mobile phone, tablet Folding size: 28 * 28 * 2.55cm /11.02 * 11.02 * 1in Unfold size: 28 * 28 * 9.3cm /11.02 * 11.02 * 3.66in Item weight: Approx. 914g /32.24oz Packing list: 1 * Laptop stand 1 * Data cable 1 * User manual