The band is fairly stretchy (stretches from 22 to 28 inches), so my fit comes up less supportive than I want for a running sports bra, however I have a 25" under-bust. The band has four columns of hooks and a Velcro portion.
In my size range, the cup size might run a little big. I would order your normal cup size plus a cup size down to see if it compresses better. I hear that other size ranges may run small instead. The cup fabric is very soft cotton, somewhat thin and stretchy, and lightly compresses and encapsulates. The high cup height is great for 'tall' breasts.
Overall the bra is very comfortable and I'll save it for lighter exercises and home wear but not for running. My 28E - Panache Sport » Non Wired Sports Bra (7341) is another non-wired sports bra that gives me better support running because the cups are firm and so resist movement better, the band is tighter and firmer, and the shoulder straps hook together in the back, adding stability.
This bra is not owned any more
Updated on May 11, 2019 Flag this
This is a perfect example of how brands don't make bras consistent across the sizing scale. I have 3 of these in a 30K and all three ran very small in the band and small in the cup.