... CE EL T-shirt, el sound active t-shirt,el flashing t-shirtsound active 1.EL T-Shirt, ideal for your artwork or logos printed on as promotion T-Shirts,different ... artwork, same price .2.Works with 4 x AAA batteries, with on/off feature 3.100% cotton washable T ... 9,Flashing panel is fixed with T-shirt by Velcro, when you wash t-shirt, you should take off the panel kids led t-shirts ...