I bought this band when I was at the end of my second trimaster.  When I first tried it on something didn't feel quite right and I even tried it upside down thinking that the label might be off.  the band just didn't work.  It felt useless...and then in the third trimaster I started to get a bit of a back ache and discomfort due to my stomach being larger I decided to give it a try and oh boy was I glad I didn't throw it away.  I think my belly was too small when I tried it first to appreciate the benefits of comfort that it provides.