This bra is terrific for those who have a larger bust and like high impact activity.  It's constructed of strong-yet-comfortable materials and they do the job of keeping everything in place.  Compared to my only other 'acceptable for high impact activity' bra, this one has a much better look both under clothes and shirtless.  It is also a bit more comfortable for a longer term wearing (like after a workout).  I would not try to wear this one all day, but it's still comfortable enough to keep on awhile at least.

For sizing, I am (according to Nordstroms) a 38DD.  I wear the 38D for this one and it fits very well.

Others have mentioned it's a bit tough getting on--which makes sense given it's strong support-- and my trick is to set up the back hooks and let down the shoulder straps as far as they go then slip over my head like a pull on bra (while holding the hook section as still and under as little tension as possible).  Then I cinch down the shoulder straps to get the proper fit.

Like I said, no bounce, and I'm able to run or do any other activity I've tried.

HIGHLY recommended--and for shopping sake on Ammy I picked my size, then rolled over the colors to find which ones had Prime shipping (or if you don't have Prime, at least would qualify for super saver shipper as this means the vendor is either Amazon or a partner that stores things on Amazon's shelfs) and if you really don't care about color you can find a good deal.  The one I bought from Ammy was about half the cost of normal price and free shipping.

JTG