This tank is made of a pretty thick material and is very compressive, but I sweat putting it on! 32DD and I ordered a small per the size chart. For me, the support is light. I probably can't get away with not wearing a bra underneath.
Very fitted, and I love the pockets. If you're in between sizes I would recommend sizing up. I'm usually a medium (36D) and mine is a bit of a squeeze to get on but comfortable.
I love my Ava tank first time i wore it was taking my kids to the zoo having the pockets on the sides was an awesome feature plus the built in bra was great to have as I hate having to wear full bras with warmer weather. It is a little fitted so I did size up from my regular size and glad i did.
I was worried this tank would not be supportive enough - but i've done high intensity cardio and run in it and it's been perfect! I sized up one size from my normal and it still has a high amount of compression.
I wanted a tank to wear this summer and to work out in. I do not have to wear a bra with this and take the pads out for hot yoga. A small fit great - 32C and 27 inch waist. I do have a long torso and it seems to be the perfect length.