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.