I'm embarking on a trip to China in a few months. It will be a very long haul flight (something like 16 hours) and obviously I'm going to want to freshen up along the way. I want to bring basic toiletries; toothpaste and deodorant (I think that's all). So I looked up the rules and they say no more than 100ml, which is fine, and a quart sized zip lock plastic bag. What size is a quart size (cm rather than inches please). And does it matter if my bag is a lot smaller (after all I'm only brining two liquids on). And does it matter if these have already been opened (my toothpaste for example has been used before)? Please be as exact as possible as I don't want to be in for a nasty surprise when I get to the airport. Thanks very much for any answers x
更新1:
Just to clarify (because Our Man in Bananas seemed to get a little mixed up) the ziplock bag has to be a quart size (obviously not the liquid)