• Includes: 1 40-inch balloon with the number 3 and 1 straw for inflating. • Material: Made with high-quality aluminum foil, resistant to explosions and leaks. • Easy to use: Easily inflates with an inflation tube in a few minutes. Can be filled with air or helium. • Free combination: Ideal for combining with other numbers to form ages or important dates (e.g. 10, 16, 18, 20, 30, 40, 50, 60). • Wide applications: Perfect for decorating graduation parties, birthdays, weddings, bachelor parties, and other celebrations. • Measurements: 40 inches high, 14 cm wide, 0.5 cm thick, and 20 cm long.