3.4 oz. (US), 5.7 oz/Lyd (CA), 55/45 cotton/polyester broadcloth; Stain-release and wrinkle-free finish; Front, back princess seams and bust darts for a feminine fit; Straight collar with pearlized buttons; Patented pucker-free taped seams; Specially fused collar, cuffs and placket; Split back seam with bias cut back yoke;