The feather and down proofness is the most important quality request. It can be roughly calculated from the construction data of the fabric.

羽毛/羽绒不穿透性是最重要的质量要求。这可以从面料的结构数据中粗略的计算出来。

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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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Manufactured articles filled with feather and down - Requirements for clothing - Light use.

填充有羽毛和绒毛的制品。服装的要求。轻便服装。

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It's quiet and comfortable, and brings to mind lonely walks down cobbled streets, or a large feather bed on a rainy afternoon, or maybe a long-distance phone commercial.

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