6-panel boa cap. The outer fabric is made of a WOOL material called "ETERMINE". The lining is quilted with padding to provide warmth and protection from the cold. The earpieces have a fine boa fleece. This fabric is a plain-woven wool material known as etamine, characterized by its softness and made with loosely twisted yarns. The fabric undergoes air-tumbler processing to enhance its volume and texture further.