Worn about twice. I am selling these because my child has outgrown them. I saw them being worn and they seemed to be non-slip. Retail price: 2680 yen There are no noticeable stains. Please check the condition in the photos. *Please note that there may be oversights due to amateur inspection. Only those who understand that these are used items, please purchase. Returns and cancellations after shipping are not accepted to prevent product switching, etc. Thank you for your understanding.