These LED Lightsticks light up bright with red green and blue LED's lined up in a rainbow fashion. The casing has dark lines throughout it that help create an amazing strobe pattern with the steady on mode. Besides the steady on mode these lightsticks contain 6 other modes! These modes include fast flash, slow flash, strobe from one side to the other  (red lights up then blue then green in a flowing fashion), one side to the other (opposite direction), fast back and forth flash, and finally slow back and forth flash. These rainbow lightsticks have several awesome modes and light up bright making them a very popular item!