Why do flannel quilts get wet in winter?

Flannel is a kind of chemical fiber, which is airtight. In winter, the temperature inside the quilt is higher and the temperature outside the quilt is lower, which leads to the contact between the air inside and outside the quilt and produces water vapor, which condenses on the quilt. In addition, the number of windows opened in winter is less and the indoor humidity is higher, which leads to the increase of the water content of the quilt. It is suggested that the quilt should be aired in the sun regularly, which is beneficial to the drying and comfort of the quilt.

Flannel is a kind of chemical fiber, which is airtight. In winter, the temperature inside the quilt is higher and the temperature outside the quilt is lower, which leads to the contact between the air inside and outside the quilt and produces water vapor, which condenses on the quilt. In addition, the number of windows opened in winter is less and the indoor humidity is higher, which leads to the increase of the water content of the quilt. It is suggested that the quilt should be aired in the sun regularly, which is beneficial to the drying and comfort of the quilt.