Not even you knew you could be this fast. With NITROFOAM(TM) ELITE underfoot - that's PUMA's nitrogen-infused foam for exceptional 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 ULTRAWEAVE 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: ULTRAWEAVE upper locks you in at top speed NITROFOAM(TM) Elite premium performance foam for extremely lightweight, pinnacle responsiveness 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