My Livia device really does work. I've used it on my worst days and with this on I didn't even feel any cramping. It's amazing and I wish I had discovered it sooner.
Pros and Cons:
Portability
Cute skin colors
Actually works
Clip doesn't always stay clipped onto clothing
Easily turns off when leaning on a counter doing dishes
Pocket
Bottom Line: Yes, I would recommend this to a friend