How fast is ULTRA 6? Buckle up and play as fast as Christian Pulisic. Perfect for an aspiring pro with a need for (more) speed, this version of the new ULTRA 6 combines PUMA’s brand-new SPEEDSYSTEM outsole and FastTrax stud design for traction that’s miles ahead of the competition. Three rounded studs on the lateral side let you switch between firm ground and artificial turf seamlessly. Wherever you play, play at full throttle.