It's 26.5cm. I've used them for about 75km, but they don't fit my feet, so I'm selling them. I've mainly used them for road running, and since I just bought them, I haven't used them in bad weather. [Quoted from the NIKE website below] Engineered Mesh Upper The upper uses engineered mesh to ensure softness and breathability. Two different density midsoles Two different density midsoles with ZoomX foam layered on top of ReactX foam. It provides 13% more responsiveness than traditional React technology, enabling comfortable footwork. Pods around the outsole Pods are placed around the outsole to enable quick movements and smoother weight transfer from heel to toe. Comfortable padding The soft tongue and lining fit snugly and comfortably on the foot. New features The new multi-layered foam midsole, with premium ZoomX layered on top of ReactX foam, makes the cushioned feel even more comfortable. Product Details Weight: Approximately 325g (Men's size 28cm) Offset: 10mm MR-10 shoe last: Provides Nike's highest level of stable fit Design with reflective materials on the details This product is not intended for use as personal protective equipment (PPE) Color shown: Black/Dark Smoke Grey/Light Smoke Grey/Black