Nike Zoom Fly 6 (Bright Crimson), size 25.5. I've only run 10km in these, so there's no dirt other than on the outsole. I really like the design, but I don't see myself using them, so I'm selling them. They have high cushioning, and you can run comfortably at a pace of about 5 minutes per kilometer. Comes with the box. Gender: Men Use: Long distance/Marathon