The World’s Largest Solar Bag — The Giant Solar Bag works on the same principle as our smaller solar bags. Simply fill the bag with air, tie off the ends and let the energy of the sun heat the air inside the bag. — Within approximately 5 minutes, the bag will rise into the sky. It is absolutely amazing to see! The giant bag can also be cut to make several smaller solar bags. — With solar bags, you can explore the principles of solar energy and wow your friends at the same time! Detailed instructions included.