• High quality: Made with high-quality aluminum film, very shiny, non-toxic, harmless, and durable. • Giant surprise: The size before inflation is approximately 101 cm and the size after inflation is approximately 86 cm. It is delivered deflated. • Helium or air: The balloons can be filled with helium or air. Inflation can be done using a simple inflation tube (included in the accessories) and only takes a few minutes. It is self-sealing. • Multifunctional: It can be used with other numbered balloons or with latex balloons to make balloon bouquets and table decorations. • Ideal for any occasion: Perfect for birthdays, weddings, parties, festivals, and other special events. • Duration: The valve closes by itself and the balloon stays inflated with helium for up to 8 days.