I received this as a gift from a friend, but I'm selling it because I don't use it. Material Composition: Outer fabric: 89% cotton, 11% polyester; Lining: 80% polyester, 20% cotton [Size] Unisex Free Size: Head circumference 60cm [Prevents hair damage and dizziness] Protects hair from the high heat & dryness of the sauna and keeps it moisturized. Sauna hats prevent damage to the head, such as dizziness and headaches caused by the heat. Recommended for long sauna sessions. [Washable Sauna Hat] A sauna hat made of towel fabric that can be washed in the washing machine. Unlike felt or wool hats, it's easy to care for and can be kept clean for a long time. Please air dry after washing to prevent fabric damage. Currently sold on Amazon for 3480 yen.