This is by far the best unpadded racerback there is. I wear mine when working out, running and playing golf or tennis. It is also wonderful for regular wear, and looks good under anything. Stretchy band and cups make it easy to find the right fit. Half the time I forget that I have it on, it is sooo comfy. Typical Wacoal quality.
I really like Wacoal bras anyway, but this is my favorite because of its versatility. Also very comfy. Great under t's. Also doubles as a very good sports bra because of its racer back features and because it actually wicks away moisture. I really like it for golf. The moderate stretch in the cups accommodates differences in breast sizes. And the stretch in the band allows me to wear a 38C even though my actual size is closer to 40B. As a relatively athletic male, I need the larger band size, but really appreciate it when I can find stretchier 38's because of the greater selection. This bra is certainly not as confining as a regular sports bra, so might not be good for running. Slight nip protrusion.
This is the most versatile bra I own. Can be worn for sports and working out. Wicks away mortgage. Also nice for regular use. Slight plunge for some cleavage. Nice under t's. Comfy and stretchy. Former secretary recommended it (I'm a guy). Glad she did.
I acquired this bra years ago, before I found my true size. It's a 36DD; I'm a 30H. Obviously, it's not going to fit well. The band is very loose, so there's not much support. The whole bra is basically one piece of soft, stretchy fabric. It has a racerback and a plastic clasp in front, between the breasts. I use this bra as a sleep bra, and I sometimes wear it when I'm on my period and other bras feel uncomfortable. Because the back is all fabric, it's very comfortable to lie down in, and it offers its best support when I'm not moving around. I've had this bra at least five years, and it is still in great condition.
I wish this bra came in a 38DDD/F. I know it stretches out quite a bit, even in the knit fabric cup, though, so I keep buying them in 38DD and wearing until they stretch out. Then they are really comfy on me. I even sleep in these when they're well "broken-in." Front closure is nice, but means it needs to fit very tightly when new, as there are no adjustments. Racerback is nice under racer tees, but means the straps are close in on your shoulders. They will show on wider neckline shirts. Nice wide "gore." There's actually no fabric gore, as it's a single front closure clip. The measurements I made were on a well worn stretched out one.
I bought this bra to wear under T back tank tops, and other tanks as well. It serves its purpose well, but now I need to buy a second or third for the summer! I really like the fit, as a front close I found I was more comfortable going a size up, and though the cups aren't perfect and I would purchase a DD next time, the D cups are stretchy and rather forgiving. There is no padding on this bra, so if you are self conscious about nipping out, plan on wearing petals, a thicker top, or buy a padded version.