Which 11" MBA sleeve can fit MBA with Speck hard case?

[kegler]

As above, looking for a sleeve to protect MBA while in bag

 

[Dr Charter]

I'm not sure how thick a speck case is but I imagine a ColcaSac would work. They are durable and stretch for a snug fit. For example, the same sleeve fits a 13 inch MacBook Air or MacBook Pro retina really well.

http://www.colcasac.com