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。
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。
There are long pointy head, shoulder and finger extensions, feather cocoons, masks and fabric strips that inhibit or emphasize bodily movement.
有尖长的头，肩膀和手指的延伸，羽茧，面具和各种约束或为了强调身体活动的布条。
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