5.3 oz/yd²., 89/11 polyester/spandex; UPF 40+ protection; Four-way stretch fabric for increased mobility; Rich, cotton-like feel; Side vents for added mobility and ventilation; Relaxed front placket; Threaded grommets to improve ventilation; Stylized back seams; Iconic rubberized Spyder bug logo at back neck; Rubberized Spyder wordmark at right side;