This is an Asics S4. I used it for about 30 kilometers after purchasing it. I bought it for training with carbon shoes, but I haven't used it much, so I'm selling it. The original box is not included. I have self-cleaned it after use. I purchased it from Step Sports. Please check the condition in the photos. It is used, so please refrain from purchasing if you are sensitive to this. I would appreciate it if you could complete the transaction properly. I may cancel the transaction for those with negative feedback in the past. Color: Red Size: 27.5 cm