Electric fairys wing are breakthrough from traditional fairys wing. controlled by 4 2a batteries, they flutters like real butterflies and are accompanied by cosy music! Light up fairys wing,the wing equipped with 2 light strings, glow in the night that creates a warm atmospheres. when wearing these light up wing, your girl will be a dark night elves! your will love it wing the electric wing have 2 adjustable shoulder straps,perfect for girls butterfly party. can also decorate your pet dog Widely use this fairys wing for girl can be widely used in various occasion, such as fairys princess parties role play, halloween cosplay, dressing up games, birthday costume parties, weddings and theatrical , and so on. making your girls more dazzling in the crowd. Wonderful ,sweet warm for friend family and yourself.