PRICES MAY VARY. Be made of high quality aluminum material and auto-seal, the size is 17.7 x 15.7 inch, so these balloons were TOO SmALL TO STAY IN THE AIR measurement about 16 inches of birthday foil balloon, includes 13 independent alphabet letters, can be freely taped to the wall Great for birthday party, baby shower,outdoor party, home party, celebrations and other on-site decoration In general,aluminum balloon is inflated to about 70prc., please do not inflate too much,in case of affect…