100% cotton (Oxford Grey: 90% cotton/10% viscose) RingSpun pre-shrunk combed cotton Piqué stitch Fitted style 1x1 ribbed neck and cuffs Placket with 4 matching buttons Taped neck Side slits Certified STANDARD 100 by OEKO-TEX®N° CQ1007/7, IFTH Color shade differences may occur at Dark Grey and Light Royal Blue products