Prismatic Rainbow Happy Birthday Foil Balloon – 45cm Bring vibrant energy to your celebration with the Prismatic Rainbow Happy Birthday Balloon! Featuring bold, colourful "Happy Birthday" text and a shimmering prismatic finish, this eye-catching balloon is perfect for any birthday ...Prismatic Rainbow Happy Birthday Foil Balloon – 45cm Bring vibrant energy to your celebration with the Prismatic Rainbow Happy Birthday Balloon! Featuring bold, colourful "Happy Birthday" text and a shimmering prismatic finish, this eye-catching balloon is perfect for any birthday party setup. Product Details: Size: 45cm round foil balloon Bright rainbow colours with a prismatic shimmer "Happy Birthday" printed in bold, festive lettering Helium inflation available in-store for an extra $4 Self-sealing and arrives flat/uninflated A fun and dazzling way to brighten up any birthday celebration!