| 摘要 |
A safety helmet for protecting a user head includes a shell extending about the perimeter of the user's head. The shell has multiple layers of material suitable for protecting a person's head in the event of a crash or other impact. A front opening is formed in the shell to allow the user to see while wearing the helmet. A separate access opening is included at the rear of the helmet, which includes a channel member extending through the multiple layers.
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