Having a Mardi Gras Party and want a way to light up the party or event! The Mardi Gras Sequin Light Up Fedora Hats can be worn and light up at any bar, club, or Mardi Gras party. The bright LEDs reflect off the sequins for a bigger and awesome light show. What a stylish way to show off at any Mardi Gras party or event. To activate press the button on the battery pack inside the fedora. Can be set on twinkle, flash or a steady light. Comes ready to use with 2 replaceable batteries in a one size fits most design.