You know the saying "see and be seen". You will definitely be seen in this LED shirt that lights up and reacts to sound or music just like an equalizer! Featuring the latest technology this is by far the coolest shirt for your next sporting event, party or dance club! The LED panel on the front of the shirt feels like a thick iron-on and is powered by 4 AAA batteries. The small battery pack or controller sits in a hidden pocket on the inside of the shirt so it is not noticeable to others or can be clipped onto your pants or belt for a better fit. This shirt is machine washable.