Look at the pet food in the back! Also, I'm wearing a running hoodie that I got from "The Ukrainian" for Christmas!
(photo credit to Tea Time)
Here's an example of a replacement filter that sister K got me... near an old photo! Replacements cost about $7 and last about 2 months. Certainly cheap considering the cost of clean water sometimes!
Overall, these are great for those on the go and drink from lots of water fountains. Being one of those people myself, I always worry about what I'm doing to my kidneys. I am usually having issues with my kidney health tests and am trying to keep my water intake as clean as possible (especially if I ever decide to have kids -- a must).
The only con is that the water comes out a bit slow from the top, so I can't guzzle as quickly as I'd like. Also, it's a bit too fat for most of my cup-holders, but it makes up for that in cuteness.