2 billion stockings are produced every year and a lot end up at landfills. Textiles should never be thrown away and we are working hard to find new ways to recycle our tights and socks. There is still a long way to go before we find a way to fully recycle tights and socks but until then here are some easy ways to extend the life of your garments;The thickness of the stocking is indicated in Denier, (D), a measure of the thickness of the yarn. 15D – 30D are considered thin stockings, while 40D or more are considered thick, thus less sensitive.