Another possibility to check approximately the feather and down proofness is to measure the air permeability of the fabric.

另外可能近似测试出羽毛羽绒不穿透性的方法是：测量面料的空气渗透性。

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Color silk fabric is of good air permeability and wet absorption as well as good ultraviolet ray absorption and anti-bacterial property but poor anti-crease, weak strength and easy yellowed.

彩色蚕丝织物具有良好的透气性和吸放湿性，良好的紫外线吸收能力和抗菌能力，但抗皱能力差，强力较低，伸长率较大，容易黄变。

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This fabric exhibits not only fine protective effect against heat by conduction, radiation or convection but also good air and moisture permeability.

该织物对传导热、 辐射热和对流热均有良好的防护作用，而且透气、 透湿性好。

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