This light up vest broke out of traditional party's ideals.With the help of LED Flashing Lights, catch all people's attention in the night.it's more funny and glamorous. Material:100% polyester ;Design: Cool LED light-emitting design coats, especially attractive at night. Four modes for LED lighting up : fast flashing, slow flashing, constant on, and off. Removable Battery - Batteries can be taken off, easily to be removable with a Battery Pack.Working ways: 3* AA battery (not included). Comfortable and breathable. Great For Club, Music festival, electronic syllable,birthday party， Sport， Stage，Christmas Party,Carnival,Festivals Stage Performance! also can wear in daily life.