It seems to be similar in nature to Instead, although it looks bulkier. I've seen this thing before and I just don't see how it would work because of that thing that sticks out of it. Also, I'm not sure I trust it to be safe (I'm a germ freak). You are supposed to wash it out after use and reuse it...I'm worried about that toxic shock syndrome. Instead is a GREAT product and they are disposable so the germ concern isn't an issue. I've been using Instead since the mid 90s and absolutely love it.