Celebrate in style with this happy birthday balloon - Quick assemble in only 5 mins. Kit Includes: 1 happy birthday balloon, string for hanging, glue dots for attaching to wall and straw for inflating. Color: Silver holographic Inflated size: 51in wide x 49in high (130cm x 124cm) Material: High quality aluminum foil Inflation: Air-fill only. There are so many ways to say, “Happy Birthday!” to the one you love. But on a day when you’re busy hosting a party, why not let your balloons do the talking? This luminous, shimmering Holographic Happy Birthday Balloon will leave no doubt in anyone’s mind — let the party begin! As the light shines on this beautiful feature balloon, it reflects at different angles and lets off a fractal of rainbow hues.