Suede leather with cool flow through mesh, adjustable chin strap and leather hat band. Fully foldable, waterproof and super light weight.
Sizes in inches: S - 6 7/8, M - 7 1/8, L - 7 3/8, XL - 7 5/8, XXL - 7 7/8. Measure around the top of your head just above where your ears are attatched to your head.