I gain and lose weight regularly so it's extremely difficult for me to find bras that fit for more than a few weeks at a time.  This style is quite flexible.  With adjustments to the straps and the three rows of hooks, I jumped from a 36D down to a 34C.  I like the smooth surface under T-shirts.  My only complaint is the corduroy-like ribbing around the rib cage.  I wish it were smoother.