The most stressful thing when I travel is not being able to find good clean water.  On the cruise ships I've experienced, the water from the faucet smells so heavy with chemicals and tastes bad too.  Of course there is the option of buying bottled water but that is never a  good option and sometimes contains even more chemicals and bad tastes.  So, I did my research and bought this brand which I cannot say enough good things about.  Now it gets packed in my suitcase for all my trips!  Thank you so much!