Heavy-duty canvas, 650 power down fill, water resistant shell Recycled eco-fleece lining Primaloft® Gold Eco insulation Reflective binding 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