Thank you for viewing! This is a haori shirt made of 100% cotton double gauze, a soft material. How about it for UV protection? ꒰ღ˘‿˘ற꒱ I bought it a few years ago and wore it twice for outings. It has been stored after home cleaning. ★ The size is indicated as 90cm on the chest pocket, but it feels a little small, so it might be good for children who usually wear around 80 size. I haven't worn it many times, but it has been washed, so I would appreciate it if you could understand that it is a used item. ☆ If you have any questions, please feel free to contact me. ☆