This is a limited edition "PARIS" model of the ASICS running shoe "GEL-KAYANO 31." It's from the "Celebration of Sport Collection" and features a vibrant yellow and green color scheme (Light Celadon/Safety Yellow). I've only used it once for a half marathon. Since then, I haven't used it, and because it has been used so few times, the upper and cushioning are in good condition, with no noticeable stains, and it's relatively clean. There is also very little wear on the soles (please check the photos).