Minimal in design, the men's Nike Revolution 4 (EU) Running Shoe is made of lightweight, single-layer mesh for breathability and soft foam beneath the foot for revolutionary comfort and responsiveness. Mesh upper for optimal breathability. Soft foam midsole delivers lightweight, responsive cushioning. Rubber outsole offers durable traction. Deep flex grooves promote natural range of motion. Rubber outsole provides traction, durability and cushioning.Upper - Textile, Lining and Sock - Textile, Sole - Other Materials.