Thank you for viewing. This is a used item. I used it once. From the official website: This is a rain hat with a unique design inspired by a kasa (traditional Japanese hat). It can be easily folded and pops up instantly to its original shape. It has space at the top, making it less stuffy, and comes with a chin strap to prevent it from being blown away by the wind. It uses waterproof material and has a core material to prevent it from losing its shape.