I've only tried these on indoors. They're like new. When I bought them, something about 5mm in size was attached to the outside of the right shoe (see photo 6), but I don't think it's noticeable! The size is 25cm-25.5cm, but I think even those who wear 26cm in domestic brand sneakers can wear them! Wallabees are usually fine one size smaller (-1cm) than the shoes you normally wear, as the manufacturer explains on their website. My foot size is 27cm, and I bought them thinking they would fit, but they were a bit tight.