I am a 34D and fairly petite.  I purchased this bra for running based on the reviews that it kept the ladies from moving around to much.  I was looking forward to not doubling up on lesser bras as a lot of other women my size have to do.  But this thing is impossible to get on.  Although it has a hook closure on the back, it still does not allow enough room in the band when unhooked to put on.  I had to contort my arms just to get it over my head and shoulders only to realize the thing was in no way going to fit over my boobs. You want a jog bra tight, but not painfully so.  I also noticed that the lining material was kind of rough and I can imagine that, had I run in it for more than a few miles, I would probably end up with the dreaded runner's nipple.  Ouch all around. I've heard really good things about Moving Comfort and have no doubt they make a great product.  This just isn't the bra for petite larger chested women.  Go with something that opens completely in the back for running or a stretchier bra for your lighter activities.  I ended up getting a Champion high impact bra with regular hook closures in the back and love it.  Nice smooth material so no nipple irritation and they hold the gals in place nicely.  As always, my return was processed quickly and with no problems from Amazon.