Why bamboo viscose drapes more heavily than cotton
Short answer: Viscose fibres are smooth and bend easily. That is why the fabric follows gravity down along the body instead of standing away, as stiffer cotton fibres do.
The stiffness of the fibre
Cotton fibres are twisted and stiffer. They hold the fabric away from the body. Viscose fibres are smooth and bend easily, so the fabric drapes. See facts about bamboo.
That is why dresses hang differently
A dress in viscose falls vertically and forms soft folds. The same cut in cotton stands away more. See bamboo underwear for women.
Advantage and limit
The drape suits most people and is comfortable, but it does not give sharp, structured silhouettes. See advantages of bamboo viscose.
Weight amplifies it
A heavier fabric drapes more. A very light fabric instead settles against the body. See bamboo underwear for men.
Wet it drapes most
Wet viscose is heavy and stretches easily. Lay heavy, wet pieces flat. See washing and care.
Frequently asked questions
Why does viscose drape more heavily than cotton?
Because the fibres are smooth and bend easily, where cotton fibres are stiffer.
Is that an advantage?
For soft shapes yes. For stiff, sharp silhouettes cotton is better.
Why should wet viscose be laid flat?
Because it is heavy and stretches easily when it hangs.