Shop Girls's at RalphLauren.com, the Official Site of Ralph Lauren. Stretch-Cotton Polo Dress - This super-cute polo dress is crafted from stretch-cotton mesh and features our signature embroidered pony. Ribbed polo collar. Five-button placket. Short sleeves with ribbed armbands. Even vented hem. Our signature embroidered pony accents the left chest. 98% cotton. 2% elastane. Machine washable. Imported.