Question

Why is wool used for winter clothing?

Answer 1

The structure of the wool fiber causes thousands of tiny air pockets to form in wool fabric. In cold weather these trap body heat like a thick blanket does. However, those same air pockets mean that air can flow through the fabric, allowing the body to cool itself through the evaporation of sweat.

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Answer 2

the reason that why wool used for winter clothing is because the thin fibres in wool block the outside cold air and keeps inside warm