I regularly wear a 30FF bra. The Coobie bra holds fairly well and gives the chest an appearance somewhere between the sports bra look, and the regular bra look. It does not give any kind of protection against shock/impact in the way that a sports bra functions, but if you're just walking around and doing casual activities, the bra does well. The straps are actually detachable, so you can make the straps cross back or halter, which is very nice. The fabric is very comfortable and breathable. I was concerned because the bra does not have cups that keeps each breast separate so you don't get sweaty cleavage after a long day, but that little pinch in the middle of the front fabric keeps the breasts separate enough for comfort.
I tested 3 of these bras over the course of 3 days. I work in a hot kitchen and stand on my feet for about 12 hours. The bra did well. The straps could be a tad wider, as they dig in a bit, but not terribly so. And remember, this is after 12 hours of sweating and moving around in a busy kitchen. The part of the straps that dug in were mostly the plastic parts that adjust the length of the strap, which is part of the reason for taking one star away. The other reason would be for the shifting pads. After 12 hours, the pads had rotated or shifted off to the side. Not sure at which point in time along the 12 hours they had actually shifted to a position that was unacceptable. The pads are the perfect thickness for smoothing out the nipple area without adding bulk, however if the pads float around too much, this defeats its intended purpose. I understand that the pads need to be removable, but there must be some way to create a more ideal solution.
Either way, this bra is one of the best in its class. I've been waiting for something like this. Although improvements can be made, it is still worth the purchase. Would I wear this under a cocktail dress to a party? Probably not, as there are other bras that give better shape, but I would recommend this for anyone who wants something comfortable to lounge around in, or for wearing under casual clothing on a daily basis, or for long days doing low impact work... Just buy it already.
Average Height (5'4"-5'8")