The Macbook Air 11 inches fits perfectly in your pocket without slipping. I have the impression that the envelope had been tailored to this laptop. Even with the laptop in it can be the case with an ease and make. The zipper makes no problems. I have a good feeling to have my laptop in the envelope, because it is thus perfectly protected. Since I am a very clumsy man bag including laptop is inside fell off me. The laptop did not get a single scratch them and, of course, also had no effect thereof. It is thus protected all around 100%.
I can only say about the smell: leave you, please do not be swayed. After a maximum of 2 days the smell is gone and you can use the bag odor-free. But I must honestly say that the smell me not so bad before came, as some claim. As I said, after 1-2 days the smell is gone, after the bag is odorless.
From handling the bag is very easy and at the same time quite thin. It fits in most handbags, so you can transport the envelope including laptop anywhere without problems.
All in one I am very satisfied with the bag. It is visually very pretty, protects the laptop perfectly and the quality is especially good. For those looking for a special, fancy fabric sleeve for your laptop, this bag is very good;)