I thought these would be good because our house and daycare have flooring, so they wouldn't slip. I bought a set of three pairs at the beginning of 2025, but my child is sensitive and didn't like the feeling on their feet, so they didn't wear them. I'm selling two pairs because one pair was tried on. I threw away the original packaging, so I don't know the exact size, but I bought them for a child with 15 cm feet. I think they would still have room even if a child with 15 cm feet wears them. For reference, I've included a comparison with a measuring tape and the sole of the shoe in the third picture.