I purchased 4 of these bottles with 2 filters each. The adventure filter and the fitness/tap water filter.
Gave as Christmas gifts: 1 to adult daughter for camping with her dog and 1 to grandson for camping with the Boy Scouts.
The other 2 bottles I purchased for my husband and I for our upcoming trip to Italy.
We both use CPAP. As we learned from our 1st overseas trip to London, distilled water is not easy to purchase overseas. Traveling on an airplane with distilled water is not possible for a 2 week trip for 2 CPAP's. Other countries very much do not understand why we need distilled water and don't seem to understand why we need these medical devices.
If we use tap water or regular bottled water in our machines it leaves a white residue from the minerals in the water. Leaving the machine hard to clean and I believe hard on the machine itself.
The adventure filter used for filtering water from streams, worked perfectly for our CPAP's ! No visible residue at all !
I felt safe using the filtered water for my own health and for the machine too.
I liked that there was no straw because I could just squeeze out the water I needed to fill the water tray in the CPAP. The straw would have been difficult to do this.
Plus since I used the second bottle in my day pack while touring, I could share the bottle with my husband ( who had a cold a couple of days into our trip). We just squeezed the water into our mouth without putting our mouth on the spout.
I was concerned at 1st that I couldn't get a bigger bottle with the 2 types of filters but it worked out perfectly. If I had a bigger bottle it would have been heavier to carry around.
It was easy to fill if needed more water.
We also found TSA asked if we had a metal water bottle. This bottle is a good, light weight, sturdy plastic. We have enough to think about getting through TSA !
This worked out better than I expected.
This was a really great purchase choice. Great product.
Only cons...1. replacement filters are a bit expensive, however, I suppose it is in line with other filter prices...2. The bottles did not come with filter information; like, run under cold tap water for 1 minute? 30 seconds? Soak in bowl? Or how to install filter. Although, inserting the filter really was easy to figure out. When I went online to get the information, printing was an issue because I couldn't enlarge print. Actually had to use a magnifying glass to try to read. This information could have easily been on the packaging of the bottle.
Otherwise, what a perfect purchase/gift !