Cover with a thick foam regains its shape when it is deformed. I had ordered a MacBook Air for a 13 ". This cover is perfect for MacBook Pro 13" Retina. I had ordered the cover for MacBook 13 "Retina and I returned because it seemed slightly too big. In any case, the case exudes quality workmanship: foam and zipper that slides perfectly. Its look is unobtrusive. Well suited for storage in a macbook backpack with the adjacent wiring. Obviously, I highly recommend this product.