This shirt will absolutely light up to sound, so make some NOISE!  Quiet whisper sounds or loud, it doesn't matter.  With the sensitivity dial you can control the noise setting on the side of the battery pack.  It's very simple to use and it's a fantastic way to get noticed anywhere in a dark setting.  People will be attracted to you and your shirt instantly.  Responses you will hear, "Look at that shirt! That shirt is all kinds of sweet, sic, cool!"

     T-shirt Features:

     *  Black color only

     *  100% cotton

     *  Unisex t-shirt 

     *  All sizes are in US measurements

     *  Inside cotton sleeve cord cover

     *  Inside shirt pocket for battery pack  

     *  Handwash or Dryclean only

     *  Panel is sewn on 

      Inverter Features:

     *  Sensitivity Dial located on side of inverter 

     *  Battery indicator on light

     *  Belt Clip 

     *  Up to 24+ hours continuous battery life

     *  4 x AAA batteries required (Not Included)