Jiang Bo Summer Womens Mens Sun Protection Windproof Fishing Cap Neck Face Mask Flap Hat Jb003 Material: 100% Polyester;Lightweight, quick dry Fabric Adjustable size: suitable for head circumference 47cm-58cm, Foldable Complete Sun Protection UVA / UVB (Comes with Mouth/Face Cover as well); Ideal for camping, boating, fishing, hiking or grrdening; Large bill and back flap provides great protection from the sun