Step on your path in comfort with the Revolution 8. Every stride is cushioned thanks to a foam midsole and a flexible forefoot. Plus, the mesh upper is even more breathable than the previous iteration so you get an extra-comfortable feel. Breathable upper: Mesh upper offers a comfortable, breathable feel. Product Details: Weight: approx. 236g (women's UK 5.5). Heel-to-toe drop: 10mm. Special-edition colour design What's New?: The mesh on the upper is more breathable than the Revolution 7