Long before jeans, leggings or tailored trousers became everyday wardrobe staples, a nomadic horseman in what is now northwestern China was buried wearing what researchers now call the oldest known pair of pants in the world. Discovered in the Yanghai cemetery near the Turfan oasis in the Xinjiang region, the woollen trousers date back more than three thousand years and offer a rare, well preserved glimpse into ancient textile technology.