I've got this one from Honigs.
http://www.honigs.com/detail.asp?Cat=1&Sub=4&Item=85
It didn't survive a flight from Amsterdam to Prague as well as I hoped it would, but it's still a good bag.
Even if it don't survive my next flight (to Sophia, Bulgaria in September), I will buy the same as I have now.
I'm so glad that Honigs has opened a European store in Germany, cuts down a lot expenses by taxes!