This bag is great.  It fits my 16 inch laptop and has a ton of room to spare.  I have not used it at the airport yet. The only problem I is the part of the strap that has a buckle type fixture to shorten and lengthen it.  It is plastic and I think it will break easy.  It hasn't yet but Ive heard from others that they have problems with it.  Other than that the bag was a great buy. Still not sure why the black is 149 dollars while the red is 100.