The Wool Buff fishing mask is made from 100% natural merino wool for soft, next-to-skin comfort. Warm, even when wet, to add a layer of warmth on frigid mornings or cold days on the water. An integral part of your cold weather fishing gear. Designed to trap more air keeping you warm without the weight. Resists the growth of bacteria that can cause odor. One size. Washable. Imported.