If you belong to the domain of music freaks, then a T-shirt can help you to tell the same to others. The T-Qualizer is a T-shirt that has a built-in graphic equalizer panel which is sensitive to the surrounding sound. If you are dancing to your favorite tunes in a disco, the shirt’s graphic panel also lights up to the beat of the music. The fabric of the shirt won’t be an issue as its made of 100% cotton. It has a fully functional EL (Electro Luminenscence) panel with a detachable battery pack that rests in to the pocket inside the shirt. Unlike some programmed stuff, the equalizer bar will change according to the frequency of the music.

The shirt comes in black color and its panel has lights that flash in green, yellow and red in time to music and sound. You need not worry about the size, as it is available in all three sizes.
The is available for £25.99 ($ 49).
Source