Light up your birthday party in style with a Red Happy Birthday Square Glow Shape! This happy birthday glow shape is the perfect way to light up any birthday event! Each square shaped Red Happy Birthday glow shape measures approximately 3 inches in diameter and has a self-adhesive backing that allows it to be attached to almost any surface. Perfect as part of your party decor or when you want to decorate a friend's house for her big day, these red happy birthday square glow shapes are sure to be a hit! To activate your Red Happy Birthday Square Glow Shape simply locate the ampoule in the center, press firmly until it snaps, then shake to disperse the glow product. Please note the glow feature in the Red Happy Birthday Square Glow Shape is intended for one-time use only. The happy birthday glow shapes are sold by the piece.