Posted by a reviewer on Amazon

However thats due to the straw being able to flip open

Posted by a reviewer on Amazon

Took this to nepal where the water quality is questionable at best

Posted by a reviewer on Amazon

Very slow filter rate but thats what you get with a filter that cleans dirty water

Posted by a reviewer on Amazon

The only issue i found was with altitude changes the bottle does leak and if you have water in the bottle and you try to drink it on the airplane it will come flying out of the top due to the pressure

Posted by a reviewer on Amazon

So everytime we got onto a plane or had a change in altitude you had to open the top to release and pressure and then it wouldnt spray all over

Posted by a reviewer on Amazon

I ran out of water at one point and it was awful

Posted by a reviewer on Amazon

The plain ones are 18 on amazon right now

Posted by a reviewer on Amazon

I had no qualms filling up water anywhere i traveled except in the city in china note it does not filter heavy metals chemicals so be aware it is still not safe to use in those situations