Not even you knew you could be this fast. With NITROFOAM(TM) underfoot - that's PUMA's nitrogen-infused foam for maximum energy return - ULTRA NITRO(TM) 7 is exactly as fast as it sounds. The low-profile lugged rubber outsole and NITRO(TM) midsole are designed for hard natural surfaces and artificial grass (2G). The re-engineered mesh upper sheds weight, keeping you locked in and close to the ball at full speed, so it's as light as it is lethal in front of the goal. Design: Lightweight, dual-mesh upper offers lightweight fit and breathability NITROFOAM(TM) advanced nitrogen-injected foam for lightweight responsiveness and cushioning Foot-hugging streamlined construction The upper of the shoes is made with at least 20% recycled materials Durability & Traction: Rubber studded outsole offers traction on turf surfaces