Hello Kitty folding mat. If I remember correctly, I think I won this in a lottery at Seicomart a long time ago. I've used it a few times, but I don't remember using it outdoors. As you can see in the photo, there is a small stain in the circled area. I checked for anything else, but that's all I could find. This is on the front of the carrying case and the back of the mat. The carrying case is faded, but the mat inside doesn't seem to be faded much and is in good condition. The mat is labeled as waterproof, but I'm not sure how effective the waterproof treatment is after years of storage. The size of the bag for the mat is approximately 35 cm in both length and width. The mat is approximately 90 cm long and 120 cm wide. Please understand that this item has been stored at home for many years before purchasing.