Like nylon, polyester is an inexpensive polymer that can withstand wear. Polyester socks are more absorbent than nylon and have better breathability.
Polyester also has better and longer color fastness than cotton, and it dries quickly and does not absorb.
Polyester fiber is a fabric of socks, which is much stronger and durable than cotton or wool. Polyester dries much faster than cotton and wool, and does not absorb water, so your feet can also be kept dry. In addition, polyester fiber can better maintain color, so your socks will not fade quickly.