I have owned this product since 1999. It has been to at least 30 countries with me. It is comfortable and discreet and you literally forget you are wearing it. I have worn it through some of the scariest cities in the world and have never ever worried that I might lose my passport.
I also use it on a day to day basis. I have used it at amusement parks and at concerts with standing room only. It is the cheapest peace of mind you will ever buy.