I'll do it (relatively) short: The bag / envelope comes in the picture is not quite as well over, so I had to let myself be surprised a little. Sides and back are made of neoprene - two layers, that is white on the inside and black on the outside. While closing the zippers, the cushion edges (inside) draw automatically on the sides of the laptos. The front consists of "ribbed" synthetic fabric and has a bag with enough space for similar's power supply! Overall, it makes an impression of quality and fits just as well for the normal, white MacBook and not only for the thinner PRO! Buy and well ;-)