The Kensington UltraThin Magnetic Privacy Screen seamlessly attaches to the MacBook Air's magnetic frame, allowing it to close completely and enter sleep mode — without needing to be removed. The screen protects your display from scratches and damage, while providing privacy by limiting viewing angle to +/- 30°. It also reduces harmful blue light by up to 30%, diminishes glare, and improves clarity. Magnets make it easy to attach and detach.