Balloons are a great decoration to add to your prom theme. Standard latex Fashion balloons come 150 per package. Balloons are a must have decoration for prom. Create clusters for the floor, hang from the ceiling, or make stunning balloon arches. The possibilities are endless! Match your colors to your theme and make it a perfect prom night! 9 inch balloons are not recommended for helium (won't float). These 9 inch balloons come in multiple styles including: metallic balloons, pearl balloons, fashion balloons, and crystal balloons.