This trio of arrows creates the coolest circle of light in response to sound frequencies, using innovative sound activated equalizer technology. Watch the lights react to your voice or music!

Each 100% cotton t-shirt has a hidden sewn-in pocket for the small control unit. Features a variable sensitivity dial to customize the level of reactivity to sound volume. Uses 4 replaceable AAA batteries. The shirt is hand-washable and comes in adult sizes Small through XXL. (XXL has a $3 size surcharge.) The sewn-on design itself is about 7" x 4.75".