The Revolution 8 is an evolution of your faithful favourite. Every stride is cushioned thanks to a foam midsole and a flexible forefoot that makes your steps soft. Plus, the mesh upper is even more breathable than the previous iteration, so you can run in cool, collected comfort. Mesh upper: The mesh upper offers a comfortable, breathable feel. Product details: Weight: 236g (approx.) (women's UK 5.5). Heel-to-toe drop: 10mm