3.5 oz./yd², 100% microfiber performance polyester; Heather Grey is 4.7 oz.; Paragon Plus moisture and odor management; UPF 50+ protection (Heather Grey is 30); Wrinkle-resistant finish; Detailed stitching; Double-needle stitched self-fabric neck, sleeves and bottom hem; Raglan shoulder, inset sleeves; Side seams; Tear away label;