Genuine Kangaroo leather made in Australia folds into its carry bag and always springs back to shape. Super lightweight with a 50+ ultraviolet protection factor. All kangaroo hides are obtained under the Australian Federal Government's Wildlife Protection Act. 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.