Sandblasting is what gives your jeans the worn-out look. Under the sandblasting process the denim is smoothed, shaped and cleaned by forcing abrasive particles across it at high speeds. This fashion however comes at a price: the health and even the lives of sandblasting workers. Sandblasting causes silicosis which the World Health Organization states leads to lung fibrosis and emphysema. In later stages the critical condition can become disabling and is often fatal. The International Textile, Garment and Leather Workers Federation launched its campaign to eliminate the use of sandblasting in the garment industry in 2009. In 2010 both Levi's and H&M jointly decided to eliminate the process from their supply chains representing a major breakthrough in the campaign.