Brand new, never used. I bought these on impulse because I needed them, but I already had shoes at home that I could use, so I don't need these anymore. I haven't worn them outside even once. The size is 23cm. I usually wear a 23-23.5. The cushioning inside is comfortable, and I recommend them for people who have jobs where they stand for long hours! ⤴︎︎︎It's like standing on a low-rebound cushion! They're also available on Amazon, so I'll include a link for your reference!