Helmet lining is an important part of helmet. Without it, there is no way to use and operate normally. Nowadays, helmet has become an observation object of more attention, because driving without helmet is really a tricky thing. After all, most of the reasons for the accident come from not wearing a helmet or wearing a helmet by mistake. Therefore, helmet is a very important item. It is precisely because the country began to pay attention to this series of safety problems that the price of helmets began to rise with these factors.
So the larger / more holes in the helmet, the more ventilation?
Ventilation is the key to the helmet, which can ensure the dryness of your head during long-distance riding. The more or larger the vents on the helmet, the greater the airflow around the head and the cooler it feels. However, keep in mind that the more or larger the vents on the helmet, the more the head is exposed, so the degree of protection is reduced accordingly. Road bike helmets have more or larger vents than mountain bike helmets. Similarly, compared with mountain cyclists, road cyclists should consider the weight of helmets. Generally speaking, the lighter the helmet is, the more expensive it is. Therefore, unless you want to reduce your weight as much as possible for bicycle racing, it's not worth spending extra money on super light bicycle helmets.