LIGHTWEIGHT SHOE: Women's Nike shoes are made of lightweight, single-layer mesh for breathability. No-sew overlays along the midfoot and eyestays provide durability while keeping the running shoe lightweight.SUPPORT & COMFORT: Women's shoes offer support and structure with underlays in the vamp and toe tip while the cushioned heel collar of the running shoe remains low-profile for lightweight comfort.SOFT FOAM MIDSOLE: Nike Revolution 4 women's athletic shoes are built with soft injected Phylon (IP) foam for lightweight, responsive cushioning, plus horizontal bellows molded into the foam create added response.RUBBER OUTSOLE: Full-length rubber outsole on this Nike running shoe provides traction, durability and cushioning for your runs.MULTI-SURFACE TRACTION: Molded pods offer multi-surface tractions for our Revolution 4 women's running shoes. Pods flatten on impact then spring back at toe-off creating a piston effect that delivers responsive cushioning.