Multi color acrylic knit shell Primaloft® Gold Eco insulation Lush fleece lining Jacquard woven logo Patented behind-the-head design Adjustable click-to-fit frames for a variety of head sizes Works with hats, helmets & glasses Fits discreetly under long hair Fully collapsible for easy storage in a pocket, purse, briefcase or bag Color: Blue Multi Style: 41518-910