What material are running shirts made out of?

Running shirts are typically made from moisture-wicking synthetic fabrics such as polyester, nylon, or a blend of these materials. These fabrics are designed to pull sweat away from the skin, promoting quick evaporation and keeping the runner dry and comfortable. Some running shirts may also incorporate spandex for added stretch and flexibility. Additionally, there are options made from natural fibers like merino wool, which offer breathability and odor resistance.