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-what Polo call's the perfect ""rumple."" The formula is so unique, it's been kept in a safe for more than three decades. Today, Mr. Lauren continues to create countless variations of his iconic shirt, including this camp-collar version that features a classic plaid pattern.