Compatibility: This Microsoft Surface Laptop Cover is compatible with 13.5" Microsoft Surface Metal Keyboard Laptop 3/4/5 Models (1868/1951). Not compatible with Laptop 3/4 models (1867/1950) and other 13.5" Surface Laptop 1/2/3/4 with Alcantara Keyboard and all Surface Book models, all Surface Tablets, and any other non-Microsoft computer models, please make sure below Verify your laptop model before ordering 【Heat dissipation and switch】The bottom of the cover is designed with ventilation holes to ensure that your 13.5 inch Microsoft Surface laptop has good heat dissipation. Snap-on and two-piece design is easy to grip and remove, giving you the freedom to open/close your Microsoft Surface Laptop at any time Easy Installation & Removal: Simple clip-on/off design without the added risk of harming your laptop during application.