4.1 oz. (US), 6.8 oz/Lyd (CA), 60/40 cotton/polyester. Fine yarn count shirting. Stain-release and wrinkle-free finish. Classic fit. Rolled button-down collar with pearlized buttons. Adjustable "Comfort Collar" for up to an inch of stretch at neck. Patented pucker-free taped seams. Specially fused collar, cuffs and placket. Split back seam with bias cut back yoke. Left chest pocket.