It’s an all-wool (merino) light neck gaiter, sweat band, ear warmer, base layer for a scratchy beanie, and adds one layer to any anti-covid face mask. Seven inches wide, a Rivendell world exclusive. There’s no reason to go anywhere without one of these. Not necessarily on you, but at least with you.
Wash: Machine and warm is fine, so is drying, but it'll air dry overnight, so just do that.
