... a good promotional gift 3,color: red, yellow, green, LED LIGHT UP T-SHIRT LED EL Panel T-shirts , EL T-shirt ... 200pcs/ctn Carton size: 49*38.5*34cm G. W:15kg N.W:14.5kg Application: Products promotion, election, festive gatherings, night ... hours, then brightness decreases a lot or even no light.3. Promt delivery4. payment:T/T,WESTERN UNION LED LIGHT UP T-SHIRT