Giant 40-inch tall Megalloon balloons are so popular. Our clients love them. But, when the request is for outside, I only use them under certain conditions.
When they are Helium filled, it’s best that they are taped to monofilament line, glued together; and, then pulled into another balloon structure, like the top of an arch. This is important to combat the ever present wind.
Our favorite situation is when there is a tall fence or wall to anchor them to. Here we fill them with air and use tons of tape. But, because the air makes the Megas heavy, they settle nicely against the fence in a swag (upside down arch). See our arch photo gallery at http://www.ballroomballoons.com/gallery1/php/index.php?category_id=66
Enjoy,
Stan