Product details • Type of sport: running • Flat heel • Fastening: lace-up Fabric content and care advice • Uppers: 100% textile • Lining: 100% textile • Cushioning: 100% textile • Sole: 100% rubber. Electrify NITRO™ 4 seamlessly blends NITROFOAM™ and PROFOAMLITE for a responsive ride with cushioning. With a breathable mesh upper and PUMAGRIP rubber for unbeatable traction, these shoes are designed to propel you forward, mile after mile. Visit our page to learn more about our black.