Bluebulb Projects presents:
The Measure of Things Logo
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The item is
The size of a Hot Air Balloon
And it has the following description
(four-person capacity; envelope volume; average)
The average volume of a hot air balloon sufficient to lift four adults is 78,000 cubic feet. Typically made of nylon or dacron, a balloon envelope of this size typically weighs just 88 kg (190 lbs).
As well as following link:

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