Marware's innovative Silicone Protection Pack for 13" Macbook Aluminum Unibody provides unparalleled comfort and protection. The silicone hand rest helps keep your laptop clean and free from scratches from watches or jewelry. It also feels great! The track pad cover is made of a thin, clear plastic film designed to minimize oily fingerprints, dirt, and scratches on your track pad. The keyboard cover prevents the transfer of dirt and oil from the keys to the display, and doubles as a screen-cleaning cloth.