Wolford Wolford's 'Aurora' socks are Cradle to Cradle Certified™ at gold level - one of the most stringent standards in sustainability. They're made from regenerated and recyclable nylon plus degradable elastane. This product was created using Considered Materials. Find out more about NET SUSTAIN here. - Black stretch-knit - Pull on - 94% nylon, 6% elastane - Machine wash