These unisex double-layered cold-weather knit winter hats are made with a squishy, durable blend of wool, acrylic, and nylon fibers. Chucky knit to allow airflow while keeping your noggin toasty and dry on those frigid winter days. Machine washable. Add a removable pom pom to your hat, see my other listings! These hats are knit and made to be extra stretchy and fit most youth-adult heads. Model’s head in the picture is approx 21.5” around. One size fits most (16in-26in circumference). One hat sold = one hat donated Proudly Veteran-made in the U.S.A. The upper Midwest is subject to some cold winters & hats are a necessity. For each hat sold, one hat is also donated to a homeless veteran non-profit organization in the Midwest. Machine washable cold gentle cycle. Lay flat to dry. Returns and exchanges are accepted within 7 days of receipt. Buyer is responsible for return shipping costs and any loss in value if an item isn't returned in original condition.