Instant purchase and silent purchase are welcome! #batu-kun's shop Size: 30-31, which, according to online research, is 19.5-20cm. ◎Everything is as shown in the photos, so please take a close look at the colors, shape, etc., before purchasing. ◎As it is stored at home, there may be stains or damage to the bags and boxes. ◎[HMIYA] Marine Shoes Kids Water Shoes Beach Shoes Children's Amphibious Aqua Shoes River Lightweight Barefoot (Management number 16-8) 22