I recently ordered a Mujjo sleeve for my MacBook Air. I must say this has to be once of the nicest sleeves of any type I have ever seen. It is a bit expensive weighing in at ~$92 shipped but it is well worth it.
They make them for many different items, I am strongly thinking about one for my iPad. Only reason I haven’t pulled the trigger is that I am thinking of getting an iPad Mini, but I am holding out for the Mini Retina.
Check it out here!