Eiderdown feather can absorb the of 20% moisture in humid air, there won't be humid feeling when falling asleep.
羽绒羽毛能够吸收潮湿空气中20%的水分，入睡时不会有潮湿的感觉。
2
Because of the big density and weaving difficulty for the cotton waterproof eiderdown clothing, the general sizing material can not meet its sizing requirement.