Press the power button to switch between the 3 different light up modes, Quick flashing, Slow flashing, and Alternately flashing. Change the mode you like, enjoy foam sticks with a good mood when joining party with your friends.Spice up your glow parties with these foam glow sticks in the dark party favors and decorations or use as giveaway toys. Perfect for Christmas, Halloween, birthday parties, weddings, concerts, bar, sporting events, raves.