If you're talking about the Patagonia Active Sport Bra - one caveat. It's billed as a "high impact" bra which it most definitely is NOT. It would be fine for cycling. It's very comfy and I'm sure it wicks sweat very well. But it gives almost zero support. I returned the one I ordered as soon as I tried it on and realized that it didn't even support my B-cup boobs standing still and looking in the mirror - let alone any high-impact activities that I'd planned for it.

I have a CW-X bra from this site. Some of the larger-breasted women swear by this bra and I think it probably would be great. But the B/C cup version is really more for the C cup ladies - not as much support for me as I'd like.