3.4 oz., 55% cotton, 45% polyester; Fine yarn count shirting; True Non-iron performance straight from the dryer; stain release finish;Patented pucker-free taped seams; Fused collar cuffs and placket; Split back seam with bias cut back yoke; pearlized buttons; straight collar; front and back princess seams for a flattering feminine fit; bust darts for a flattering feminine fit;