Shop Boys's at RalphLauren.com, the Official Site of Ralph Lauren. Herringbone Wool Driving Cap - This timeless wool driving cap features a classic herringbone pattern and our signature embroidered pony at the back. Snapped bill. Adjustable slider buckle at the back. Fully lined. Our signature embroidered pony accents the back. Hat: 100% wool. Lining: 100% cotton. Machine washable. Imported.