I used it for my first pregnancy. It helped a lot. Maternity pants would always slide down on me, even at the end of my pregnancy. So I will use the band again. Right now I have old pants that are a size bigger than what I usually wear. I actually weighed about 10lbs less before I got pregnant this time than last time.
I have two belly bands and love them.
The bands didnt stay up well for me, the bunched so I just used a regular rubber band with my jeans for a while