I own this tank in several colors.  The fit is true to size and it is very flattering and has a cute style.  It is great because you can adjust the length.  The support is good for medium or small sized breasts.  I wear a 36 C and find the support to be adequate.  I teach water exercise and have even taken step and aerobics classes with this tank under my exercise clothes so that I could run straight to the pool and teach and had no problem with it.  It is a soft cup, not an underwire so it may not be sufficient if you are a D cup or larger.  It is great for water exercise.  It doesn't ride up, is supportive and adjustable.

I used this top when I went to the beach, the size is great, and it looks great! The only thing I would add to it is firmer cups.

I bought this tankini top to wear at the pool and beach, but it's really just like an exercise top. It doesn't have any support to speak of.