Premium Ultra Thin TPU Keyboard Cover for MacBook Air 13 & MacBook Pro 13" 15" 17" (with or w/out Retina Display, 2015 or Older Version) Why choose TPU keyboard cover When you confusing with TPU or silicone keyboard cover, here are some tips may help you. TPU is a flexible polymer material and its full name is Thermoplastic Polyurethane. It has been widely used in the medical industry due to it has excellent physical functions, such as flexibility, wear-resistance, strength, hardness, extension and temperature adaptability and so on. TPU keyboard cover is characterized as ultra thin and high transparent, it has very good visibility and not easily caught the dirt, and it is not easy to deformation, so it becomes more and more popular nowadays. Compatible with: MacBook Air 13-Inch Model: A1369 and A1466 MacBook Pro 13.3-Inch Model: A1278 Ma