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Its an interesting idea, and would save people from lugging around cumbersome foam helmets, but is it actually safer
The default front vent is more complex than it might appear to a casual observer there are four fins in the sliding mechanism that direct air over the head and pivot to sit flush while closed
These findings confirm that the viscoelastic polymers used in modern football helmet padding are strongly temperature-dependent, and their mechanical behavior directly affects the helmets capacity to attenuate impact energy
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