Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Great idea, but...

The thing is waaaay too big. I am over 30 and have had a child, but I also have a cervix that tends to get in the way. I considered this when buying, but didn't see any information or reviews that would lead me to believe that I should opt for the smaller cup - and I read a lot before I made my purchase. They really should think about suggesting some other considerations in determining the appropriate size. I am not sure that childbirth or age are good determining factors anyway. The vagina is a very elastic organ. Unless you have had a bunch of children, I am fairly certain that most stay just about the same size and shape as pre-childbirth. Particularly when you gave birth quite a long time ago (as I did). There's no way to return/exchange it, obviously. So it was a waste of $[...].