My Acer Aspire M5 has (although 14.1 inches) in this envelope to each side cm square just 2. In a "Perfect Skin" I would have expected a different fit, especially since the small inner pocket is not need to take accessories (at best, a few sheets of paper). Admittedly, my notebook with 20.1 mm is also rather thin, to a second skin this bag would, however, not become even in thicker dimensions.
So please do not be blinded by the many positive reviews (which may be pertinent). This case would probably still fit loosely for many 15-inch models. I now use in any case, a 13.3-inch shell that fits like a glove.
