89% polyester, 11% Spandex, 180 gsm; Four-way stretch fabric; Rich, cotton-like feel; 40+ UV protection; Relaxed front placket; Threaded grommets to improve ventilation; Stylized back seams ; Side vents for added mobility and ventilation ; Iconic rubberized Spyder bug logo at back neck; Rubberized Spyder wordmark at right side;