Green Onions Ultra-thin Custom Molded Silicone Keyboard Protector (RT-KBS05) Provides keyboard protection from spills, dirt, crumbs, bacteria, and other common contaminants Ultra-thin silicone provides a transparent, durable and flexible defense that's very comfortable to type through. Installation is as easy as laying the Protector over the keys Clean up is simple: just wash it with water and detergent or wipe it with an alcohol swab, and once it's dry, it's ready to go again At less than 0.25 mm thick, you can bring it inside a closed MacBook