6 oz/yd? / 195 gsm, 100% recycled polyester Coolcore? pique; Coolcore? technology is chemical-free, mechanically engineered performance that doesn't wash out; Moisture wicking, thermal regulating, UV protection with no topical treatments; Sustainable fabric manufacturing practices. Learn more at Coolcore.com; Self-fabric collar with integrated collar stays; Matching knit cuffs; Side vents; Open V-neck placket