| 摘要 |
Protective helmet ( 1 ) of the type comprising an outer rigid cap ( 2 ) to which a shock-absorbing shell ( 3 ) made of expanded material is internally fixed and an internal lining ( 5 ) for the comfort of the user. The helmet ( 1 ) comprises at least one intermediate cap ( 4 ) made of non-expanded material situated between the inside of the shock-absorbing shell and the internal comfort lining.
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