Jobs and the Apple marketing team have been using a manila envelope to show off just how thin the new MacBook Air really is, but Belkin thinks it has a little bit better carrying case for the new notebook. The new MacBook Air Sleeves come in four different designs ranging from $39.99 to $49.99 that add only slightly more bulk than the Jobs’ envelope.

The sleeves are made from Neoprene and leather and include the Slim-Fit, which has no zippers or magnets, just a sleeve and a flap for $39.99. The Neoprene/Leather model does have an asymmetrical zipper for side or top loading of your MacBook and goes for $49.99. There is also a Vertical Sleeve model with a strap which is designed for use all by itself also for $29.99 along with the Expression Sleeve which also features a strap. The other Sleeves are tailored a little more to be carried inside another bag.