主权项 |
1. A helmet system, comprising:
an inner cap having
an inner layer including a first side, a second side opposite said first side, and conforming means for conforming said inner layer to a wearer's head,an outer shell layer overlying said inner layer and having first fixation means, anda chin strap having first and second ends secured to said first and second sides of said inner layer, respectively, and; a helmet sized to fit onto said inner cap and having an inner surface with second fixation means complimentary to said first fixation means of said outer shell layer such that said inner cap may be releasably secured to said helmet when said first fixation means engages said second fixation means, and wherein said conforming means and said chin strap cooperate to restrain planar and/or rotational movement of said inner cap relative to a wearer's head when said helmet system is secured to the wearer's head. |