50% cotton, 50% polyester, Oxford is 53% polyester, 47% cotton, shoulder-to-shoulder tape; double-needle coverstitched front neck, set-in sleeves, rib cuffs with concealed seams, seamless body for a wide printing area, double-needle stitched hemmed bottom; seamed 1x1 rib collar; CPSIA Compliant, Sizes: S - XL.