To activate your Glowstick Animal Ears Headband, crack the tubes & assemble them into the plastic connectors. Instructions included. One size fits most – stretchy plastic headband. NOTE: When you order 1 piece, you are ordering a wholesale box full of 12 Headbands. Therefore, when you order 12 pieces, you are actually getting 144 headbands! Glow Colors: Blue, Green, Orange, Pink, Red, Yellow Glowstick Animal Ears do not require batteries!