展开Quality wool is water resistant, soft, and naturally warm. These ear wraps have an adjustable back for one size fits most. The earmuffs also collapse for easy storage. The behind the head design makes it easy to wear with hats and glasses. Made of 50% Wool, 50% Viscose Natural fibers allow for warm breathability Soft wool provides comfort and excellent warmth Behind the head design allows you to comfortably wear hats and glasses Adjustable for one size fits most Collapses for easy storage