WDCS EL Light UP Rave Party Costumes TUTU & LED Blinking Earrings Elastic Waist Band Comfortably Fits Waist Size From 23"-34" The Clip-on Battery Pack Is Smaller Than A Deck Of Cards Requires 2 AA batteries (Batteries not included) Featured 3 Flashing Modes- Fast, Slow, and Solid Comes With One Pair Of Flashing Clip-on Party Earrings WDCS Is A Trademark Belong To Us (Wantedcases, Inc.)