3.5 oz. (US), 5.8 oz/Lyd (CA), 53/43/4 cotton/polyester/lycra; Fine yarn count shirting; True Non-iron performance straight from the dryer; Stain release finish; Active Fit; Front and back princess seams with bust darts for a flattering feminine fit; Straight collar ; Pearlized buttons; Fused collar, cuffs, and placket; Split back seam with bias cut back yoke;