Our Ultimate bag has survived multiple trans-Atlantic flights and 6+ Caribbean/European/US domestic flights per year since 2004 (it's now Aug. 2008). It has a few rips which are completely the fault of the airline (one looks like an actual knife cut it), which I've mended with duct tape, and still it keeps going. I absolutely cannot recommend it enough for its durability. By comparison, we purchased a 'cheap' alternative last year for our 2nd child. That thing was absolutely destroyed in one single trip overseas. The Ultimate Travel Bag is head and shoulders above its competition. I CANNOT RECOMMEND IT HIGHLY ENOUGH. If you want something with wheels - I see that's an alternate model now. I would warn, however, the "other" bag we bought, it had wheels - and those were the first things the airlines popped off.