This is a Light Up Sound Activated T-Shirt. The front design features a paid of color glasses, that light up and move to the rhythm of sounds; like music, peoples voices, etc
As most of the other light up T-shirts, this shirt requires 4 AAA batteries (not provided). The T-shirt conceals a battery pack in the inside. The pack comes with a belt clip if you prefer to clip it to your waist band. The pack also has a sensitivity control which allows you to change the sound sensitivity. For loud environments you would turn it down, and for quite places you would turn it up.
The shirt is machine washable. The panel detaches, and the T-shirt can be washed like any other garment. Make sure you do remove the panel, as they are not water proof.