Great water bottle. Excellent idea! I love the flavor choices and that I can choose the flavor intensity.Cons:
Some cartridges the mouth piece leaks. Out of the 4 I have opened so far 2 leak.
I love it so far. I do think the scale of flavor is not very good though. 1 tastes no different than water. and 10 is like straight up just drink the flavoring why don't you. Also its not clear how long these are supposed to last? I mean clearly less flavor last longer and more flavor will be less.Mandolin Gags has used this product for one week.