Fast-fashion retailer Zara is trying its hand at sustainability with a new fashion line made using environmentally friendly materials. According to the Zara site, "the collection embraces a woman who looks into a more sustainable future" and is made with materials like organic cotton, recycled wool and Tencel, a recycled fabric derived from wood cellulose. Zara says that its Tencel is sourced from sustainably managed forests and that the farming process for its organic cotton uses 90 percent less water than usual cotton. focusing on environmentally friendly offerings is an increasingly important focus for retailers like Zara, noting that a recent Nielsen study found that 75 percent of millennials would be willing to pay extra for sustainable offerings. Competitor H&M launched its own Conscious line back in 2012.