Wash these socks on a wool cycle (do not use the hand wash or delicate cycle) at a maximum temperature of 30°C / 86°F. Select a low spin speed, preferably no higher than 400 rpm. Use a mild, natural wool detergent and do not use fabric softener. After washing, gently reshape the socks and leave them to dry flat (do not dry them on a radiator or in a tumble dryer).