Polyester is generally less breathable than natural fibers like cotton or wool, but its breathability can vary based on the fabric construction and weight. While polyester can wick moisture away from the skin, helping to keep the wearer dry, it tends to trap heat more than more breathable materials. This can lead to discomfort in hot and humid conditions.
However, advancements in textile technology have led to the development of breathable polyester fabrics that incorporate microfibers or mesh structures, enhancing airflow. These variations are often used in activewear and outdoor gear, making them more suitable for physical activities. So, while polyester is not the most breathable option, certain fabric treatments and weaves can improve its ventilation properties significantly.
