My Water-to-Go active bottle was absolutely perfect for my trip to Cuba. I carried it everywhere during the daytime and used to filter any and all tap water I came across, while during the night I’d fill it with water from the cues house’s tap and put it in the fridge. Cuban tap water is not drinking quality (even Cubans boil before drinking), so I would definitely have become very unwell at some point during my three-week trip if I hadn’t been using the filter bottle. As it was, no problems at all – will definitely be continuing to use this on my travels abroad