Keeps your ears warm in winter. The Jack Wolfskin Women's Stormlock Pompom Cap is knitted from a combination of wool and fleece. The outer fabric is made from a blend of natural wool and synthetic fibres for good insulation and rapid drying performance. Inside, a warm fleece lining ensures cosy wear comfort in cold weather. The fabric is also windproof and breathable, so it prevents heat loss through evaporation and wind chill.