50% cotton 50% polyester. Oxford is 47% cotton. 53% polyester. two-button placket with bottom box stitched reinforcement . welt-knit collar. SpotShield stain-resistant treatment. back neck tape for a clean comfortable finish. tagless label . 1x1 rib knit sleeve bands. pearlized buttons with durable cross-stitching. double-needle stitched bottom hem. seamless body.