Green Onions Ultra-thin Custom Molded Silicone Keyboard Protector for the Aluminum Unibody MacBook and MacBook Pro (RT-KBS07) 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 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