Question

why synthetic fibres are not prepared in summer

Answer 1

This is because synthetic clothes are extremely fine and hence don't have sufficient pores for the sweat to evaporate. Synthetic Fabric is not comfortable during summer. You will find yourself almost itching to take them off  ...

Answer 2

synthetic fibre doesn't absorb the sweat bt cotton can absorb the sweat and gets evaporate and we know that evaporation cause cooling effect in our body. That's the region.
hope this work for u...