Review for 13" Laptop Sleeve
I didn't agree with the other comment on 'being too snug on a MacBook Air 13" '. The width is an exact match for the MacBook Air 13". And in my opinion, the overall fit is great.
My only comment is that it is VERY SECURE when attached to a compatible bag (w/ the internal soft velcro stripes). The total area of velcro is probably close to a square foot. It's not easily removed from the bag, if you took the time to attach it to your bag properly, it will feel like you're tearing a book apart trying to remove the sleeve.
-This is either a good thing, if you plan to leave the sleeve in the bag all the time, or bad thing if you were planning to use the sleeve with other bags (that is me, but I think I'll pick up a second sleeve and leave this in my commuter).