There are people like my mom, who are freakishly particular of never sharing their glass or bottle of water with anyone. Their reasoning is that they don’t want to spread germs or take on anyone else’s either. Sounds reasonable and yet very annoying that I cant sip from her bottle, in case I’m really thirsty. The Touchin is a design that prevents the spread of germs because of the way it’s fitted to the neck of the bottle.