I wore these indoors once a week for several months. I think I used them about 10 times. Since they were indoor shoes and I didn't use them often, they are still relatively clean and I've outgrown them. They're Skechers, so the soles are stable and seem easy to exercise in. The size is 20.0cm, and the color is light blue with purple accents. I hope someone can use them. I am also selling a pair of Nike (20.0cm) that I used at the same time. Please contact me if you would like to purchase them together. Color: Blue