Made of 88/12 polyester/spandex, the durable performance fabric has a stretchable give that makes this shirt perfect for high activity. It protects against UV rays for long days in the sun, and its antibacterial treatment keeps you feeling fresh. Brushed on the back side for softness; stand-up collar keeps chilly winds at bay and features a zipper garage. Textured, rubber zipper pull. Machine washable.