A sports shirt is usually a short-sleeved shirt with elastic bands of the same length from the neck to the hem, usually made of cotton, polyester, or spandex. Sports shirts can also be made of light, breathable fabrics, like cotton, polyester and spandex, for added comfort. Sports shirts are usually not worn without socks. Synthetic Materials. More commonly used now-a-days, synthetic materials in sports shirts come in two types: natural fiber and synthetic polypropylene. Natural fibers are usually more comfortable and durable than synthetic ones, but synthetics are lighter weight and do not absorb sweat as easily as natural fibers do. Most synthetic materials are dyed to make them appear…