| 摘要 |
A collapsible helmet including a shell having two or more components which are hingedly connected together about fold lines extending across the shell. Each component includes a plurality of panels with each panel being hingedly connected to at least one adjacent panel. The shell may be adjustable between a first configuration in which the helmet may be placed over the head of the user and a second configuration in which the components are flattened and are arranged in a substantially overlying relationship.
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