5.3 oz/yd²., 89/11 polyester/spandex; UPF 40+ protection; Four-way stretch fabric for increased mobility; Rich, cotton-like feel; Stand-up collar with reverse coil zipper; Side gussets for added mobility; Side vents for added mobility and ventilation; Back dart for a better fit; Debossed 'Spyder' neck tape; Iconic rubberized Spyder bug logo at left sleeve; Rubberized Spyder wordmark at center back;