Adjustable click-to-fit unisex frames ensure an easy, comfortable fit on a wide variety of head sizes. It also collapses for easy storage in bag, briefcase, or purse. USB cord included. Technology - Binding: 90% nylon, 10% spandex - Insulation: 100% polyester - Lining: 100% polyester - Shell: 97% Polyester, 3% Spandex The Brand 180s strives to be the premier provider of wearable technology that is cool, comfortable and connected.