The wonders of wool, not only is it a great insulator (even when wet) it also has anti-bacterial properties all of which are desirable attributes in a sock. Keep your feet toasty and warm, in these thick socks whether lounging around the house or mountain hiking. Even more wonderful, they are made using 100% pure new wool which comes from organically farmed sheep and is processed using eco-sensitive methods, they even retain the distinctive fresh wool smell. Available in a variety of earthy colour ways, they also come in two sizes; medium or large. (medium is size EU 37 - 41; large is size EU 41 - 45) The beautiful, paper wraparound is illustrated by Dublin artist Anne O'Hara. Caring for your socks: to avoid felting, it is recommended that you hand wash these socks and allow them to dry flat.