Supportive yet not constricting.  Love the fabric - breathable and doesn't irritate skin.  The hook is up a bit higher than some of my nursing tanks (as some others point out on various web sites), but it is still my favorite nursing bra (ordered another because I liked it so much).  I got used to the hook being up a bit higher after a few tries.  Also comes with metal hooks so that you can covert it to a regular bra when you are done using it as a nursing bra.  Sizing chart seemed accurate to me - I was on the verge between a medium and large and the medium has been fine for me.