Maracas, sometimes called rumba shakers, chac-chacs or in our case, MaRocKas, are rattlers that appear in many genres of music. Our MaRocKas, however, are unique in that they LIGHT-UP! MaRocKas are designed with a sensor that allows them to glow brighter the harder you shake’em. Use the “FUN” button to change colors (Red, Green, Blue, PLUS 7 Color-Change Part Mode) and start “Shakin” today!