Sonnet 2FIT-17T sleeve is constructed of plush microfiber material, custom-tailored for the specific size of your MacBook or PowerBook G4. This machine-washable sleeve stretches to provide a snug fit and it even can function as a heat shield between laptop and lap when not in use as a cover. The 2fit screen protector buffers the screen from keyboard rubs during transport. Made of the finest-quality optical cloth, it is also perfect for cleaning the display of your notebook. Enjoy a perfect fit in notebook protection wherever you store your MacBook-secure it with 2fit!