Sibelius Keyboard Cover for MacBook, MacBook Air & MacBook Pro (Unibody, Black Keys) Model #: SIB-M-CC-2 Designed in conjunction with Sibelius Trainer Marc Schonbrun, author of the "Master Sibelius" series, the Sibelius Keyboard Cover includes over 110 keyboard shortcuts. Compatible with Sibelius version 5, 6 and 7, the KB Covers keyboard shortcuts are color coded, so users know when to use modifier keys like Shift or Command to get the desired result. With the Sibelius Keyboard Cover, users can focus on composing, arranging and publishing and not be slowed down by using the mouse or trying to memorize keyboard commands. Best of all, you'll learn Sibelius faster than you ever thought possible! Utilizing a multi-color printing process, the editing keys are color-coded and heat fused to ensure long lasting durability. KB Covers are made of durable, ultra-thin clear silicone and perfectly molded to fit both the US and European/ISO Apple MacBook, MacBook Pro (Unibody), MacBook Pro Retina (Unibody) and MacBook Air 13"". Compatible with: 13-inch MacBook (US / European ISO Keyboard) 13-inch MacBook Air (US / European ISO Keyboard) 13-inch aluminum unibody MacBook (US / European ISO Keyboard) 13-inch aluminum unibody MacBook Pro (US / European ISO Keyboard) 15-inch aluminum unibody MacBook Pro (US / European ISO Keyboard) 15-inch aluminum unibody MacBook Pro Retina (US / European ISO Keyboard) 17-inch aluminum unibody MacBook Pro (US / European ISO Keyboard) They will not slip or slide . In addition, the covers have a silky smooth feel so they are soft and comfortable to the touch and will not restrict typing. 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. They are hand washable and easy to keep clean.