3.4 oz., 55% cotton, 45% polyester. Fine yarn count shirting. Patented pucker-free. Fused collar cuffs. rolled button-down collar. 3.4 oz., 55% cotton, 45% polyester; Fine yarn count shirting; True Non-iron performance straight from the dryer; stain release finish; Classic Fit for professional appearance; Patented pucker-free taped seams; Fused collar cuffs and placket; Split back seam with bias cut back yoke; rolled button-down collar; adjustable Comfort Collar for up to an inch of stretch at neck; left-chest pocket; pearlized buttons;