Sandblasted helmets in different sizes
Generally, the shell of a sandblasted helmet is made of a high-strength material, such as metal, engineering plastics, dimensional, etc., and absorbs most of the impact force through its deformation; the lining material has the functions of absorbing sweat, keeping warm, and damping Military helmets often have the function of further reducing the impact force and preventing shell fragments from hurting the head; the suspension system is the part between the shell and the lining, which can usually be adjusted to suit different wearer heads The difference.
If the sandblasting helmet is not the correct size, it will not protect your head from being hit. Don't make the mistake of buying a helmet that is not the right size. To determine the correct size of the helmet, first measure around the largest part of the head (usually 1 cm above the eyebrows), and then buy the helmet according to this measurement. Because helmets are often divided into small, medium, and large sizes, you may only buy relatively appropriate sizes, and then use the size adjuster rotation button to adjust to the most suitable size. After putting on the helmet, turn the helmet from one side to the other and from the front to the back. If you feel comfortable wearing it, if it is too loose or too tight, you need to continue to adjust or replace it.
Relatively speaking, the lighter the sandblasted helmet is, the better. But the lighter the riding helmet, the less chance it has to pass national safety certification testing standards, and the higher the relative price. Therefore, the premise of choosing a helmet is to pass the national safety certification test standard. Most helmets above 200 yuan can achieve about 260G. This weight will not make you tired even on long distances, so don't worry too much about the weight index of the helmet. Unless you are for a bike race. Try to reduce your weight as much as possible, otherwise it is not worth the extra money to buy an ultra-lightweight helmet.