Specification: Metal:metal Type: Laptop Stand quantity: 1 Material: aluminum alloy Color: silver/grey Width: 45-190 mm / 1.77-7.47 inches Length: 29 cm / 11.4 inches Height: 2.5-31cm/ 0.98-12.18inch Feature: 1. Portable and foldable 2. Height adjustment 3. Hollow bottom heat dissipation 4. Non-slip silicone bottom