Buff&uml; Balaclava Wool Can be worn under a helmet or on its own. The fabric will wick moisture away from the skin for comfort and warmth. Made from 100% Merino Wool. Weighs 31g/1.1 oz and measures 49cm x 25 cm&nbsp; or 19.3 inches x 9.8 inches. Available in one size to fit most adults. Is naturally elastic, seamless at the neck with a flat-lock seam over the crown of the head. Hand washable at 30 degrees and non iron, is naturally elastic and will retain its shape. Is anti-microbial so it will not start to smell after extended wear, is colour fast and will not fade. Certified to meet Oeko-Tex Standard 100