WAY TO CELEBRATE! Glow Necklace Set - Each pack contains 4 pieces of 23cm yellow glow sticks, and 4 pieces of plastic connectors. It's great for Halloween, Birthday,Fireworks, and various sizes of Parties. Just activate the glow stick and connect it to a plastic piece. The bright glow lasts for 6-8 hours. It suits for unisex, children and even adult. Let's get this glow item so you can stand in any nighttime event.