what is a 'breathing fabric'? - super water absorbent material

What is "breath making "?
The "Breath Maker" is designed to prevent the wearer from getting too hot or too cold by adjusting itself to suit internal and external temperatures.
Textiles are made up of a thin layer of wool or another layer of water.
Absorb the material and open it when it is wet by the wearer's sweat.
When the layer dries, the spike automatically closes again.
The second floor below protects the wearer from rain. —
Biswarup Bhattacharya, by email