Adjustable - Eight heights can be freely adjusted from 5.5inch to 7.0inch. You can straighten your waist and relieve cervical and neck fatigue, feel comfortable to work. Durable - Made of lightweight ABS with non-slip rubber surface pads to keep laptop in place, strong and reliable, not easy to fade. Compatible with all laptops 10-15.6”, durable enough to support up to 44 lbs (20kg). Portable - Foldable and easy to place. Convenient to carry and use at home, the office or somewhere else. 360° Rotatable - The bottom design has a turntable, easy to rotate the computer and share with others. The mobile phone bracket is designed on the side, easy for placement and viewing. Hollow design - Reduce the contact area with the desktop, which provides a cavity and is more conducive to heat dissipation.