36 Inch (3 ft) Giant Jumbo Latex Balloons (Premium Helium Quality), Pack of 12, Regular Shape - Assorted, for Photo Shoot/Birthday/Wedding Party/Festival/Event/Carnival Helium-inflation allow balloon to float. Floating time is about 18 hours for indoor or 12 hours outdoor. Balloon Size: 36" or 90cm Made of Natural Rubber Latex and Biodegradable Shipped uninflated. Can be air filled or helium filled