Solid colours: 100% cotton. Oxford Gray color: 90% cotton / 10% viscose. Combed cotton with enzyme wash. Soft touch, good resistance to washing. Fashionable slim fit. Reinforcing tape at the neckline (White for the White color, Dark Gray for the Oxford Gray color and Oxford Gray for all the other colors). Double-needle finish at bottom of sleeve and bottom of garment. Certified STANDARD 100 by OEKO-TEX®N° CQ1007/7, IFTH.