AnnabelZ Aluminum Laptop Stand Adjustable Notebook Stand for MacBook & PC Laptop (Hollow-Out Version) Hollow-out version has hollow cuts out in two supporting legs. The laptop stand is adjustable in laptop height and also angle of laptop with independent joints. Raises laptop screen height flexibly from 3.15 inches to maximum 11.8 inches for your better ergonomics. The laptop stand height can be adjusted by pulling it out the height you want and fold it down for travel. Please pull out and fold down the laptop stand with a bit of effort to adjust. Aluminum precision finishing provides superior quality and solid stability to load up to 6kg weight on top. Aluminum panel with cutting hole allows airflow and cooling for laptop. Compatible with all laptops models and sizes from 11-17 inches, Apple Macbook Pro, Macbook Air.