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