... be customized made 3.Cap Material: 100% cotton light up led caps for new year Green product, ... ,EL Inverter and CapsFuntion:EL Panel can light automatically or light according to music or sound.Bright colors, ... ,welcome your custom designs.10.Using for Logo promotion, different Festival, Party and any place, you ... pvc ,pe ,pp ,glue bag or paper carton promotion gifts light up led caps for new year