TL Green Lantern Superhero LED Sound Activated Equalizer Party Cosplay Costume Tshirt This shirt lights up and reacts to sound.Volume Control for the sensitive of music. EL panel attached to the Disco T-Shirt with LED, can be removed and replaced. Has a sound sensitivity control to take you all the way from loud anthem beats to the chill out room. Powered by a battery pack cleverly hidden within an inside shirt pocket. Requires 2 x AAA batteries((batteries not included). Great for music or dance party and sports fans, especial for Hip Hop fans. Size M(normally fits163-170 CM) L(normally fits170-175 CM) XL(normally fits175-183 CM) can choose.