... on the floor.1 . What is EL light T-shirt made up of ?T-shirt100% cotton , 180gsm,Style: men , women ... , children,Size: S,M,L,XL,XXL,Color: main is black ,pink ,other ... and inverter from t-shirt first2. Wash t-shirt by hand or dry clean3. Don’t submerge panel and inverter ... G.W: 21.0kg N.W:19.0kg drive by 2AAA batteries rich in color normal flash t-shirt