The bottle can also be made of metal or a vacuum flask. Helsinki Airport has several cold water taps where you can fill up your bottle for free. In addition, there are also hot and cold water dispensers at the South Pier.

Washrooms in the main traffic areas have cold water taps where passengers can refill their empty waterbottles with cold drinking water free of charge. These automatic taps are located in men’s and ladies’ washrooms found near Gates 12–13, 21, 26, 28 and 32. See their location in the map.
 
There are also hot and cold water dispensers at Helsinki Airport’s South Pier, near Gate 54, and in the West Pier, near Gate 43 and 45, where passengers can also get hot water free of charge. Water is essential when flying and now, you won’t go thirsty at Helsinki Airport.