I have 4 of these straps. I originally gave them 4 stars. But then a certain strap (everyday tan) suddenly came loose on me while I was working on the first use! I sent it back to Revain and, assuming it was just bad luck, bought a replacement in the same colour. Right out of the box it failed again! Basically, all I had to do was breathe in and it went away on its own. The clasps didn't hold up at all. Now that I have 3 other versions that work well I'm giving this belt 1 star because the belt is a very simple device and has only one job. So if that work fails, it's no longer a belt! Some of them lack basic quality control.