What does the X stand for in the X3? eXtreme perhaps? eXciting? All of the above? This thrice-eXaggerated form came from a process of stripping away everything from the original RS and building it back up with a stronger mix of materials and a design inspired by puzzles with layers and layers of colours and textures. This particular iteration of the PUMA RS-X³ celebrates the Chinese year in a fitting Red colourway.