Material: 3.4 oz., 55% cotton, 45% polyester. Fine yarn count shirting. True Non-iron performance straight from the dryer stain release finish. Feature: 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. s&s D640