Review on Bottle Narrow Opening Adapter Leak Proof by Charles Salgado

That's it, ignore the viewer who gave a star for having to unscrew the cap. It's quick to learn and good exercise for your fingers. I threw away all the other tops, they leaked or as another viewer said they don't make any sense for drinking. The bottles are so light you don't have to worry about them breaking. They never lick, shake them up and down, nothing will come out. I have about ten of these bottles that will last me a week. I have different designs and different sizes and I love them all. You will love them!