Apple MacBook Pro 13-inch (Retina Display). It's not leather, but shouldn't it be? My current computer got me through my undergraduate work, but I don't think it's got the gusto to get me through my graduate work. If, and only if, you have a spare MacBook lying around, perhaps you could show me how well it fits in the bag!
Black Marble Macbook Pro 13 Hard Case Pro Retina 12 Case Macbook Air 11 13 Hard Laptop Cover Macbook Pro Retina 13 15 Case Marble Macbook 12
Black Friday Sale Marble Macbook Cover Black by RealDesignRocks