Comfortable material - this colorful knitted beanie hat is made from soft acrylic fabric, personality and keep you warm. One size fits most ? Beautiful fashion - the battery box and the switch are hidden on the edge of the hat, and the whole hat looks very tidy, beautiful and fashion, this beanie is designed for you ? Perfect companion - led flashing hat can make your presence more conspicuous, whether it is halloween, club, dance, birthday party, bar activities, night cycling or other parties, are great