Question

We should wear cotton clothes in hot summer days to keep cool and comfortable. Why?

Answer 1

This can be explained as follows. We get a lot of sweat on our body in hot summer days. Cotton is a good absorber of water, so it absorbs the sweat from our body and exposes it to the air for evaporation. The evaporation of this sweat cools our body. The synthetic clothes do not absorb much of sweat, so they fail to keep our body cool in summer.