The description says that the case for laptops size from 11 to 12.1 inch is intended. In one of the reviews but was clear that this failure is much greater. Therefore, I have decided, despite the 12.5 inch (Lenovo U260) my laptop to order this envelope. My laptop fits the dimensions of her really wonderful in, but he's not quite as wide. But this is not tragic. To protect you from a bad buy, here the dimensions of the pocket (measured from the inside): 33 x 27 x (I'm assuming most) 4 I find the envelope affects quality and very nice. The feeding, so the nylon is very thick and therefore the laptop is well secured. Even the zipper opens and closes very well without jamming or other substances with similar. If the problem with the incorrect or inaccurate size specification not, the bag would get 5 stars ...