Water-resistant shell filled with 80% down—20% feathers 650 down fill power Primaloft® Gold Eco insulation Recycled eco-fleece lining Jacquard woven logo Patented behind-the-head design Adjustable click-to-fit frames for a variety of head sizes Compatible with earbuds, glasses, hats & most bike helmets Fully collapsible for easy storage in a pocket, purse, briefcase or bag