Thank you for viewing. This is the Nike Alphafly 1. I bought these for ekiden (long-distance relay races), but they didn't suit my running style, so I'm selling them. I used them once for a 5km pace run. How about these for the upcoming ekiden and marathon seasons? ・Size: 25.5cm ●Price negotiation and immediate purchase are OK. ●Free shipping ●Since there is no box, I will ship without one (If you want a box, I will ship them in a different box)