Chiara Alta (wool/cotton)90% wool 10% cotton Over the knee socks in our lightest wool knit. Made from 90% undyed wool with 10% unbleached and un coloured organic cotton. Perfect for layering over tights or wearing on their own. Because they are made from completely breathable fibres they don't hold odour or cause you to sweat like synthetics do. These could be hand washed or machine washed on a delicate cycle at 30deg with a gentle wool detergent.