This is a beautiful Light Up Sound Activated Butterfly design. The butterfly lights up and moves to the rhythm of sounds. It could be music, or your friends talking to you, etc. Sounds will cause the butterfly to become active.
The battery holder takes 4 AAA batteries. The holder is hidden inside the shirt, and it comes with a ON/OFF switch, as well as a sound sensitivity control.
This T-shirt is machine washable. The panel comes off, then the T-shirt can be washed as any other garment.