These are Mizuno badminton shoes. I've used them for about a year. They are Mizuno Wave Fang 2 badminton shoes. Mizuno's unique wave sole technology, "Mizuno Wave," provides both cushioning and stability. The new structure, with the heel sole extending outward, enhances cushioning during lunging movements and supports smooth weight transfer. As you can see in the photos, there is tearing inside the heel and scratches on the outside of the heel due to wear. There is also some dirt in places. They are approved by the Japan Badminton Association, so they can be used in tournaments and matches.