As a frequent traveller I bought the Water-to-Go bottle before a 2 month trip to Costa Rica. I was participating in a wildlife conservation programme where I stayed at a camp in a remote jungle location (the nearest town was over an hour away on public transport). This bottle enabled me to drink directly from the rivers safely. It was especially useful on a 20km hike through the national park, as I did not have to worry about carrying a large volume of water in my backpack as I frequently crossed rivers where I could fill it up. I also found it extremely useful at airports where I could fill up it up after going through security and avoid paying the extortionate prices that airports charge for bottled water.