Cover protection and very good storage, which perfectly suits to a Mac book Pro (2012 with the CD slot). Felt makes it very easy to carry (be careful if you put the cover in a place where it may make a bad encounter with a "scratch", that can lightly pull the fabric with little damage), especially by the presence of various small storage pockets on the back of the cover. In addition, the black strap sometimes allows me to put sheets / blocks, whenever I need to move quickly without too much to store! The interior is well reinforced for good protection of the Mac!
The small storage pouch for the charger is also very useful!