These were a hit the other night! I wore my pair with a blue/purplish glow stick. These come with orange or you may email for other colors presently available. Simply pull the glow stick from the large skull and then from the small one. Bend the stick and shake well. Slide back into small skull and then into the large skull however far you want it to go. Lasted 8 hours. Great for the month of October, Halloween and or Halloween Parties! (May purchase more glow sticks in our store)Please email any questions you may have. Thank You and have a Blessed Day!