... 1.Voice control driver-- the pattern on the T-shirt will flash different effect according to the outside sound ... mould is to seam the Flash patch on the t-shirt , they can be fused together and will look ... the front of the T-shirt or back . can be used on the Bar ,Disco,Dance Ball ,Sports Show , Ballcourt,Concert ... when the music ring ,the pattern on the T-shirt flash, wave with the music ,let you to be ...