The bulge that turns up in every photograph from every wedding — the one across your upper back, just under the shoulder blades — is not weight. It is a strip of tight elastic pressing into soft tissue and pushing it up and over itself.
You can prove this in about four seconds. Take the band off and stand in front of the mirror. Same body, same weight, same afternoon. No band, no roll.
Most women spend decades treating a garment problem as a body problem.
This tank has no band. The support runs through the whole garment instead, so there is nothing wrapped tight around your ribcage and nothing to push anything anywhere.