4 of 4 people found the following review helpful
Ideal travel companion,
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This review is from: Steripen Adventurer Opti Handheld UV Water Purifier - Black/Green (Sports)
My wife and I carried one of these, along with two wide-mouth Nalgene bottles, while travelling in the Far East, as we didn't want to be dependent on bottled water. Each day, we would fill up from a tap, give it a blast with the pen and off we went. While others on our trip suffered from nasty doses of diarrhoea, my wife and I were spared.