The Revolution 8 is an evolution of your faithful favorite. 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. Foam Midsole - The foam midsole delivers intuitive cushioning through comfort-focused rocker geometry. Cushioned Outsole - The outsole has an intuitive Nike design and flex grooves in the forefoot that create a comfortable and cushioned effect as you run. Touch Points - Touch points at the heel and tongue create a natural feel as you take the shoes on and off. What's New? - Mesh on upper is more breathable than the Revolution 7, helping keep you cool. Product Details - Weight - Approx. 236g/8.3oz (Women's US 8). Heel-to-toe drop - 10mm.