I liked the concept and after reading the many positive reviews I decided to give it a try.  When I put it on the band size seemed to be a little on the small side and the cup size seemed to be on the big side.  I was measured as a 38E.  I guess every bra is different though.  Also the part of the band that wraps around the sides seems to be too loose, like there is extra maternial.  It is hard to explain.  I will be returning this bra and continuing my search for the perfect underwire nursing bra.