Self-inflating birthday message balloons read happy birthday, and plenty more, right out of the packet, with no helium or pump needed. Just open, watch them puff up and stick or hang them where they'll be seen at the birthday party. They team up nicely with our birthday balloons and a birthday message balloon in a box from the wider balloons range. Since they self-seal as they puff up, they're handy when you've no pump or helium to hand.
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