Merino balaclavas are made from 100%, 230gm Australian Merino Wool. It helps keep the chill out, without sweating or overheating. Merino Wool is a natural fibre with great thermal-regulating properties. One size fits most. FEATURES 100% fine Australian merino 230g/m2 20.5 microns One size fits most Superior warmth even when wet Odour resistant Non itch