One-piece molding refers to putting the shell and buffer material into the machine for one-time processing; non-integrative molding refers to molding the foam first, and then putting the finished shell on the foam. The one-piece helmet shell and internal cushioning material have a better fit and greater strength, which can better protect our head. Rather than being integrally formed, it is relatively weaker.
The helmet skeleton, by laying a skeleton in the helmet (which can be brain-filled to be similar to the skeleton of a ship), improves the overall strength of the helmet, reduces the possibility of disintegration, and helps the helmet maintain the overall shape. In the past, this technology was mostly used on top helmets, and now this technology is also being distributed to more product lines.
There is not much to say about the shell material, its own nature determines its characteristics. In simple terms, the firmness of the helmet is: internal skeleton + integral molding > integral molding > non-integrated molding.
As for the internal buffer material, due to the technology, bias, and trade-off of each company in design, it is not easy to quantify and compare its performance. The most simple and direct way is to understand its performance through its safety certification. It mainly includes three system standards: CE, CPSC and AS/NZS. In addition to the equipment of conventional helmets, additional safety technology can bring higher safety. Examples include MIPS and Wavecel structures that prevent concussions.
The fit is mainly reflected in the adjustment mechanism and the internal shape of the helmet. The adjustment mechanism is similar, and the gap cannot be widened. The fit is mainly reflected in the internal shape of the helmet. There are two main types, one is oval and the other is circular. That is the version we often say, the former is suitable for Europeans and Americans, and the latter is suitable for Asians.
When Asians wear oval helmets, there is a grip on both sides of the head, so many helmets will bring a very bad experience, and even need to use xxl helmets to wear, and the fit is not enough at this time. With a round helmet, it's contoured to better fit our head shape and fits compactly for maximum safety.
Ventilation is very important for helmets. Especially on a hot summer day, no one wants to wring their hair out of the water after a ride. A good helmet will have an excellent air duct design, which forms an airflow to accelerate the air flow and take away heat.
Of course, ventilation often requires some trade-offs, such as aero helmets, which prioritize aerodynamic performance and reduce ventilation holes. Another example is that the ventilation of the conventional full helmet is not as good as that of the Enduro's ultra-light full helmet, but in most cases, the protection of the latter will be inferior to the former.
Helmets, after all, are equipment worn on the head, and no one wants to be top-heavy, with a lot of weight on the head.
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