The Happy Birthday Caticorn foil balloon has a diameter of approximately 43 cm and is supplied in a pack of 1. This versatile balloon can be inflated with both air and helium, allowing you to choose the perfect way to display it at your celebration. Whether you want it to float gracefully with helium or be used as a decorative piece with air, it will add a magical and charming touch to your event! 🎈🐱🦄🎉