The detail
Heavyweight white T-shirt:what fabric weight says.
A heavier fabric can feel more structured, but it is not enough to judge quality.
Fabric weight measures fabric.
It does not automatically promise opacity, durability or feel.
Heavier is not always better.
Under a jacket it can create bulk; in summer it may be less comfortable.
Compare with the source.
When a brand publishes the value, TheWhiteTee keeps its origin and limits visible.