89% polyester, 11% Spandex, 180 gsm; Four-way stretch fabric; Rich, cotton-like feel; 40+ UV protection; Stylized two-button placket; Buttons with side ‘Spyder’ etching; Threaded grommets to improve ventilation; Back dart for a better fit; Side vents for added mobility and ventilation ; Iconic rubberized Spyder bug logo at left sleeve; Rubberized Spyder wordmark at center back;