Product review (5 stars): Water Filter Straw Works Well
Well, I did not test this straw as in drink out of a puddle, but I am very glad to have it for hiking (in case my water bottle runs out) or in case of emergency. I did use it to drink some city tap water. First I tasted the water - slightly salty, flat, and tasting and smelling of chlorine - and then used the straw. The water still tasted flat but otherwise there was no taste or odor at all. I plan to use the straw for times when I get fast food and request a cup of water. No one can see me (I mean, I probably wouldn't use it in a restaurant where I also don't like to drink the water) and I can be sure the water is purified from chemicals or hand-taints from employees, etc.
The straw is blunt and tool-like, but draws easily and is lightweight. It has it's cap secured to the straw, so you won't immediately lose it, and this means the mouthpiece is kept clean if you carry it in purse, backpack, or pocket. I don't have much 'puff', so it took me several tries to blow the water out of the straw after using, as recommended by the manufacturer.
I really wanted one of these, so when I saw one available for review, I jumped at the chance. I like it very much and gladly give it 5 stars.