I much prefer J*'s carryon policy of one 115cm bag
up to 10kg (
http://www.jetstar.com/au/en/plannin...rry-on-baggage) than QF's carryon policy of one 115cm bag
up to 7 kg or two 105cm bags up to
7 kg each (
http://www.qantas.com.au/travel/airl...lobal/en#jump0). My carryon is usually ONE 105cm bag at ~10kg. So technically if travelling QF, I would have to take 3 kgs out and carry it separately eg in a laundry bag