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 and pearlized buttons.