In use, this bra works well. I wear it for Zumba, and feel that it keeps my chest well under control!
However, I find the rigid racer-back style quite hard to get into - there is a small section on the (very firm elastic) under bust band at the back with a standard hook-and-eye closure which gives you a little wiggle room, but it isn't easy! If someone with even slightly dodgy shoulders was trying to get into this, I don't think they would make it!
Also, it can be a little troublesome to get the cup pads to lie flat and even... But as long as you're nimble and you've got about 5 mins to spare to get it comfy, this bra is fine.