ok, so if i bring something like



or



with me, and it's empty to the airport, will I be required to leave it behind? note that it will be empty and i'll add water from the drinking fountains. i know, it's cheap/odd, but atleast i'll have MORE water than the 1 cup as supplied when getting food/munchies on my flights?

i'll be flying from iad to cdg (charles de galle) and then to lin (linate italy) and coming home, it's lin to bru (brussels) then iad.

i was told as long as it's empty, no problems bringiing such nalgene bottle.....thanks for any input on this (silly yet odd) question.