This is a Sumikko Gurashi folding umbrella ꯁꯧ. It's about 90 centimeters in diameter, with ribs about 55 centimeters long. I had it for my child to keep as a spare umbrella, but it hasn't been used. Although it's unused, I wrote a name on the storage bag, so I'm listing it as "like new." The name has been blacked out with a permanent marker.