Description: Novelty round congrats grad cap printed balloon. The balloon is made of Aluminum Foil. High quality self-sealing balloon,when inflated with helium will float for several days. Perfect decoration for the celebration of graduation parties. Can be used repeatedly. Size: Approx. 45 x 45 cm / 18 x 18 inch Package Includes: 10 Pieces Foil Balloons Note: 1. Color might be slightly different due to the color calibration of each individual monitor. 2. Please allow the tiny measuring deviation due to manual measurement