Shop Men's at RalphLauren.com, the Official Site of Ralph Lauren. Skull-and-Bones Sleep Pant - This comfortable sleep pant is crafted from ultra-soft cotton and features an allover skull-and-crossbones pattern. 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. 100% cotton. Machine washable. Imported.