John D.wrote a review of Arc'teryx Cierzo 18 Backpack - 1098cu in on October 22, 2008
This pack replaced a 20 year Black Diamond pack. It is lighter and is a great bag for airline travel as it packs down flat and the belt is removable.
I use it as a second bag for boarding and it works very well as a day pack, laundry bag or if not needed thrown into a carry on or checked baggage.
It appears well made although I don't know if it will last 20 years.