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 data-mapped FastTrax 2.0 studs give you pitch-perfect traction. 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: SPEEDSYSTEM 2.0 outsole responds quicker to every push-off FastTrax 2.0 studs are complemented with more rounded studs Designed for use on firm ground