These are Chiba Jets shower sandals, purchased around June 2025. The size is 27.0cm, but because they have a low instep, I, who usually wear Adidas size 26.5, was able to wear them without any problems. I've worn them outside twice for a total of about an hour. There is a scuff on the right side, but otherwise, they are in good condition. I'm selling these because I rarely wear them.