I really liked this sleeve for my macbook pro and I want to get one for my new 13" MBA but Incase doesn't make a 13" MBA specific model. I'm guessing they just figure 13" Air owners can use the Sling Sleeve for the 13" MBP. My question is, has anyone tried using the 13" MBP sling sleeve with their 13" MBA? How's the fit? I'm guessing it's pretty loose in there but I'm hoping it's not too bad. I just don't want the MBA wobbling about too much inside the sleeve. Thanks for your input!