Case Star Feather Series Silicone Keyboard Cover Skin for MacBook 13-Inch Unibody/Macbook Pro 13, 15, 17-Inch and Apple Wireless Keyboard (Black with Purple Feather) Material: durable silicone, with high quality and innovative layout in the market and can eliminate the sound when typing Every key is individually molded and specially printed on clear silicone for a long lasting professional look. Extra slim skin makes it easier for typing, easy to apply and remove for cleaning or disinfecting Flexible, washable, easy to apply and remove for cleaning or disinfecting Design to provide the full protection for your Macbook keyboard against dust spills, key wear and more.