With our freedom bra, a lot of the support comes from the underband. The underband should rest horizontally around your body, without riding up or digging in too much, and should be tight enough to allow only two fingers under the elastic. Start by wearing your bra on the loosest hook and eye, so that you can tighten the bra over the course of its lifetime.If your underband doesn’t sit horizontally and instead curves up your back, a smaller back size should do the trick.If you can’t slip a finger under your band or you feel it digging into your back, try a larger back size.