Size(before inflate) 80cm. After inflate will be smaller, about 60cm
The numbers balloon size is flat size before inflate, after inflate, the size will little small than that.
The number & letter balloons have self sealing valves. Once inflated the balloon will stay up for over a week. The balloons can be filled with air to attach to any surface.
The balloon will come flat and need inflating after you receive it.The balloon sold without Helium.
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Estimated delivery time 7- 21 days