Puma | RS-X? PUZZLEWhat does the X stand for in RS X? 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. Key Features: Color: Available in multiple colors Size: Available in multiple sizes Material: Premium quality material