When the vapor emanated from the skin surface can not easily permeate to the air, it will form a high humidity region between the skin and the fabric which makes people feel mugginess and discomfort.

当人体皮肤表面散热蒸发的水汽不易透过织物陆续排出,在皮肤织物之高湿区域,使人感到闷热不适,因而服用织物尤其是内衣,必须具备良好的吸湿透湿性能。