Add a vibrant touch to your birthday bash with our Green Happy Birthday Circle Glow Shape! Each circle-shaped glow shape measures approximately 3" in diameter and features a convenient self-adhesive backing for easy attachment to any surface. To activate, simply locate the ampoule in the center, press firmly until it snaps, and shake to disperse the glow product. Please note that the glow feature is intended for one-time use only. Sold individually, these happy birthday glow shapes are sure to brighten up your celebration!