i like that the bra is built in to this tank. i sometimes worry about the sizing, like the bra and shirt will not fit properly, but this hugs in all the right places. i have a shorter torso so there is a little extra material there, but it gives it a relaxed look.
I love the fit of this tank. The bra is supportive and the back is really fun to have open for a spin class or barre. I found that I wear a size XS in Tonic and I'm usually a S in other tanks but it fits great!