Anagram's Happy Birthday Grandpa Foil Balloon Box.
Firstly, this balloon has a black background and it has colourful spots on it. The Balloon would show your loved one just how much he means to you.
In addition, the balloon has the message 'Happy Birthday Grandpa' on it in different colours.
Furthermore, the Happy Birthday Grandpa balloon measures 18" when fully inflated and it is round in shape.
Finally, it is also available in store.