1.High Quality Plastic Hard Shell Case the cover for Macbook Air is made of sturdy lightweight plastic, slim, lightweight and seamless, which is very flexible and durable, not esaily broken. The case can protect your Macbook from bumps and scratches. 2.How to install and remove Hard shell Case Installation: Firstly,Clear your Macbook to remove the surface dust before installing the case. Secondly:Place your Macbook into bottom case and press all tabs until secure. Thirdly:Install the top case with Macbook half open and the Apple logo facing you,and snap on all tabs until secure. 3.Remove: Remove the bottom cover with laptop half open and the air fans facing towards you, Pull the hook away from the corner,One side at a time. 4. Package Included: case *1 (macbook laptop not included)