3.4 oz. (US), 5.7 oz/Lyd (CA), 55/45 cotton/polyester; Fine yarn count shirting; True Non-iron performance straight from the dryer; Stain release finish; Active Fit; Straight collar with built-in collar stays; Adjustable Comfort Collar for up to an inch of stretch at neck; Pearlized buttons; Fused collar, cuffs, and placket; Left-chest pocket; Patented pucker-free taped seams; Split back seam with bias cut back yoke;