wow this is a really great sport nursing bra EXCEPT they put big, irritating seam line right on the nipple line. i can't believe this bra is from LLL! that is a huge flaw and they need to put some sort of soft material inner lining over that. as it is i recommend while you are using this for exercise to use a breast pad. which is a whole lot softer than this terribly designed annoying seam. if it were covered appropriately then i would have given this product a 5 but it lost 3 stars because that is one horrible design flaw. seriously, buy it if you need a great sports bra and just insert some breast pads, but don't buy this and think it is going to be comfortable without it. also the nursing snaps are a little bit too high in terms of when mom has to grab and go, but that is also negilible compared to the seam.

1/23/2013 update: ladies sice writing this I've used it countless times. This is one of 3 bras I use for high impact aerobics while nursing. It is tight and I would not be able to wear it overnight. However for a few hours of exercise (high impact) this is good support... in combination with another bra or two depending on chest size. Like before, there is an uncomfortable seam along a sensitive line area. In the beginning it wasn't possible to wear this due to that problem. However as your skin becomes more accustomed to breastfeeding, it generally becomes less sensitive and it is then that you can wear this bra over another (like a soft night nursing bra). The third bra I use is a champion one, out of 3 with high intensity support. On its own, this bra is a great idea. I ust don't think nursing women have small chests or need a seam rubbing right in a sensitive area. One plus is that right after a run, if baby is fussy, it's so easy to open it.  I do find the clip too high, however if it was lower it would lose shape like every other nursing bra I've owned. So that's one of the great things about this bra is that it retains its shape over 2 years that I've owned it! I am considering buying another, and wouldnt hesitate at all if it was less expensive (like $15 or under, which is its value in my own opinion). This was written by a real mom, who exercises in this. Also I will up its value from a 2 to a 4 because in combination with another this might work. (I got a large sized and have worn it throughout no matter how large or small I have been).