now students can learn Touch Typing skills without being tempted to look at the keyboard. In addition, the cover will help keep the keyboards clean and reduce the spread of germs. Compatible with: 13.3-inch MacBook (US Keyboard) 13.3-inch MacBook Air (US Keyboard) 13.3-inch aluminum unibody MacBook (US Keyboard) 13.3-inch aluminum unibody MacBook Pro (US Keyboard) 15-inch aluminum unibody MacBook Pro (US Keyboard) 17-inch aluminum unibody MacBook Pro (US Keyboard). KB Covers keyboard covers also safeguard your keyboard from dirt, spills and wear and tear, allowing you to protect your investment in your notebook computer.