The oxford shirt made its debut very early on in Ralph Lauren's designs, and since then it has solidified its status as a pillar of the Polo look. The fabric is developed with a secret wash that gives it instant character, ease, and a heathered softness. The formula is so unique, it's been kept in a safe for more than three decades. In addition to details that evoke its prep-school inspiration, it offers a relaxed feel that produces what Polo Ralph Lauren calls the perfect "rumple." Today, Mr. Lauren continues to create countless variations of his iconic shirt, including this plaid version that is finished with the signature embroidered Pony.