If you don't need the box, it's ¥200 off. This is a very rare, not-for-sale item. I obtained it last year through a point exchange at a convenience store in Hong Kong. The material is mesh, so it's thin and light, making it especially convenient for outdoor activities or at the pool in summer. Please take a look at the photos for more details. I have never used it and have stored it in a drawer. The outer box is crushed, but the contents are in good condition. If you are interested, please consider it.