So I was on the pacifiersrus site looking at the modded Nuk 5s. I came across this in the description "You can even hear the whistle sound of air when you squeeze the tip end of the nipple through the guard of the pacifier."
Now my first thoughts were, why would you want that? Is that something that happens when it's modded? Wouldn't that allow water to get in, and hard to get out?
Just wondering what that meant, if it was intentional (and if so, to serve what purpose).