Tron Light Cycle Light up T-shirt comes with a sound activated driver that drives the EL panel.  See it in action here:

http://www.youtube.com/watch?v=cmRHS5Mw6Js

T-shirt Features:

       *  Black color only

     *  100% cotton

     *  US Unisex Measurement

     *  Pocket sewn inside for inverter

     *  Cloth cord cover

     *  Panel is sewn on and measures 6" X 5"

Inverter Features:

    *   Sensitivity Dial on inverter for reaction to environment

     *   Up to 24+ hours continuous battery life

Sizes are Measured pit to pit and collar down:

     Youth XL         19" X 24"

     Adult Small      20" X 25"

     Adult Medium  21" X 26"

     Adult Large     22" X 27"

     Adult XLarge   23" X 28.5"

Washing Instructions:

Spot Wash or follow directions below:

1.  Turn Inverter off. 

2.  Remove inverter (battery pack) by disconnecting light up panel cable from ribbon cable by gently holding on to hard black connectors.  Never hold from ribbon cable.  

3.  Remove inverter and cable from shirt.

4.  Hand wash in sink with cold water and small amount of detergent. Take care not to submerge panel in water.

5.  Lay shirt flat to dry on towel or hang to dry.  Do not dry in dryer.  

6.  Reconnect after shirt is completely dry.