Shop Men's at RalphLauren.com, the Official Site of Ralph Lauren. Plaid Sleep Pant - This comfortable sleep pant is crafted from ultra-soft cotton and features a plaid pattern and our signature embroidered pony. Covered elastic waistband with a drawstring tie and our signature "Polo Ralph Lauren" label at the center front. Single-button fly. Side on-seam pockets. Our signature embroidered pony accents the left hip. 100% cotton. Machine washable. Imported.