Note:Please purchase according to model number, It is a wrong way to determine the Surface Laptop size by measuring the diagonal length.How to chethe model number?In the Surface app, expand Device Information and look at the value next to your Surface model.360? Protection & Scratch Resistant & Easy InstallationFull Acce to All featureLets you open / close your laptop all the way and acce to all ports.Slim FitOffers all-round protection for your Surface Laptop.Fully VentedFully vented for safe heat disburt.Easy InstallationEnsure all the clips snapped securely