The superb quality of this warm, unisex winter cap lies in the details. Bison down—the undercoat of the American bison—offers superior insulation, and it's lightweight, moisture-wicking, and has no woolen itch. The ear band is lined with soft polar fleece, and the pull-top design gives uniform shaping with almost invisible seams. Knit from American-spun yarn, made of 90% bison down and 10% “Buffalon” color matched nylon. Machine washable. Made in the USA.