Keyboard shortcuts are color coded, so users know when to use modifier keys like Shift/Command/Option to get the desired result Utilizing a multi-color printing process, the editing keys are color-coded and heat fused on clear high-grade silicone to ensure long lasting, durable editing buttons for the default KB Covers also safeguards your keyboard from dirt, spills and wear and tear, allowing you to protect your investment in your notebook computer; They are hand washable and easy to keep clean Compatible with: MacBook Air 13" (US / European ISO Keyboard), MacBook 13" (US / European ISO Keyboard), MacBook Pro 13" (US / European ISO Keyboard), MacBook Pro 13" Retina (US / European ISO Keyboard) MacBook Pro 15" (2008+) (US / European ISO Keyboard), MacBook Pro 15" Retina (US / European ISO Keyboard) MacBook Pro 17" (2009+) (US / European ISO Keyboard), Apple Wireless Kayboard (2007+) (US / European ISO Keyboard)