Special art work from HandHelditems in house designers. The LED sound activated devil's wings has two flashing panel in back of the t-shirt. Flashing devil's wings has a built in sound sensitive spectrum analyzer. As the music beats, the wings moves to the beat of the music! Each frequency of music will activate a different part of the wings. The Electro Luminescence panel with a battery pack that snuggles discretely into a pocket inside the T-shirt. The end result is a very cool t-shirt to wear in a clubs or parties.
Also take a look at the other E-Shirts at HandHelditems.com
These LED are great.Especially at night.
Ya I have seen these around with some others too.