<ul><li>91/9 polyester/elastance</li><li>Ultra lightweight & breathable with seamless comfort sweatband & cool-to-the-touch Iso-Chill interior</li><li>Anatomically molded seamless construction </li><li>Unstructured, six-panels, low-profile</li><li>Molded details with laser perforations </li><li>Packable—it snaps right back into shape, no creases</li><li>Adjustable back closure</li><li>Heat-seal logo on center back</li></ul>