Icelandic wool consists of two types of fibres: inner fibres are fine, soft, highly insulating and outer fibres are long, glossy, water-repellent. Together, these fibres create a wool that is: lightweight - lighter than most other wools, keeps you warm and comfortable; water-repellent - repels rain and stays dry; breathable - moisture passes through the fibres away from the skin, keeping you dry and comfortable.