This LED EL T-shirt is made of 100% cotton. It has an electroluminescent panel (EL) across the front that reacts to music and and 'pump' in time with whatever you are listening to. It also gives a visual rhythm guide to others. It is powered by a battery pack that put within inside of T-shirt. 
<br />
<br />1. This shirt lights up and reacts to sound
<br />2. Volume Control for the sensitive of music
<br />3. Hand Washable, just unplug the battery box
<br />4. Has a sound sensitivity control to take you all the way from loud anthem beats to the chill out room
<br />5. Made from 100% cotton, this high tech.
<br />6. Powered by a battery pack cleverly hidden within an inside shirt pocket
<br />7. Good for music or dance fans and sports fans, especial for Hip Hop fans
<br />Description:
<br />Led color: Multi-colors, as show as picture 
<br />Color: Black
<br />Fabric: 100% Cotton 
<br />Condition:New
<br />Led shape: Flashing light up and down,as show as the picture 
<br />EL panel attached to the Disco T-Shirt with Velcro, so you can give your cloth a deserved wash after remove the panel and battery pack.
<br />Uses 4 x AAA batteries (batteries not included), or DC 6V power supply 
<br />Sleeve Length: Short Sleeve
<br />Stature / Chest Size(cm) :
<br />- 170 / 92 M
<br />- 175 / 96 L
<br />- 180 / 100 XL
<br />- 185 / 104 XXL
<br />- 190 / 108 XXXL
<br />Choosing Note:
<br />The size on sale is China size, it is two size smaller than European size. It means if you usually need European size of  L, please choose XXL for this T shirt. It is measure manual, it will be 1~2 cm error. 
<br />Net weight: 254g
<br />Package weight: 275g
<br />Washing note:
<br />1. Dry Clean or hand wash only
<br />2. Remove EL panel,battery pack and the whole power cord carefully before washing
<br />3. Do Not submerge any part of the flash panel
<br />Using Notes:
<br />1. Insert 4 AAA battery only, don't use mixture batteries
<br />2. Slide switch to Operate Power
<br />3. Don't bend or apply pressure to the flash panel