Shop › Cupcake 1st Birthday Pink Holographic Helium Filled Balloon Image 1 of 1 Cupcake 1st Birthday Pink Holographic Helium Filled Balloon £6.00 18” Helium filled balloon with ribbons and weight attached. Ideal first birthday decoration to celebrate. Quantity: Add To Cart Added! 18” Helium filled balloon with ribbons and weight attached. Ideal first birthday decoration to celebrate.