Cup shape is good for FOT or even shapes. Band is stretchy, true to 30 or a little tighter. My UB is 26" but I can get away with wearing this if I want a more comfy loose fit. I'm shallow and even but get gaping in top inner corners of the cups. I like how soft and flexible these cups are.
Edit: I've grown in cup size and am now a 28E. The band is still loose but the cups no longer gape. I fill them out to a smooth top line. However they are too short and much of my tall root is exposed and jiggles around.
it feels like a cheap, slightly deeper and more FoB version of a deco strapless. the gore comes up higher, digging into my body if i slouch. also, some of these allow for removable straps, but mine are sewn onto the cup. either the model has changed, or the quality control is bad.
I have a wide root and shallow boobs. I do need flat cups but not extraordinary wide wires. I almost don't have any volume on top. I usually wear this bra when my boobs are smaller during the first weeks after my mestruation.
The band is very tight and feels like a 28 in other styles. The cups appear to be true to size, they are very shallow and wide wired. I guess they are kind of open on top but I'm not quite sure. The bra has silicone strips inside and can be worn with or without its mulitway-straps. It gives me enough support even if I'm wearing it without straps.