These are UGG room shoes. They are not for outdoor wear. I used them a few times on cold days when my baby was in the stroller or when taking photos. Therefore, there is no particular dirt or stains. The boa inside is not crushed. The sides have Velcro. Measuring the sole from the outside, it's 14.5cm. (The size inside will be smaller due to the boa.) I bought them when I went to Australia.