Generally speaking, the main way to choose a helmet size suitable for you is to measure your head circumference. The specific method is also very simple: use a tape measure to circle around the wider part of the upper part of the ear and measure the circumference. The specific figure of the circumference is your head circumference, which is generally measured in centimeters; After obtaining the head circumference, you can determine your helmet size according to the size chart provided by the helmet manufacturer. Take Arai's helmet as an example. A head circumference of 57cm - 58cm requires a helmet of size M. It is worth noting that each helmet manufacturer has a different size setting standard. Make sure you judge your size according to the size chart of the manufacturer who wants to buy the helmet, because there may be differences between manufacturers, leading to the wrong size.
However, the accuracy of the size chart is relatively limited, and trying on is a more accurate way to judge the helmet suitable for you. The correct way to wear a helmet is to wear it forcefully from front to back instead of putting it on rudely and casually, which is very important and easy to ignore. If you find that after wearing the helmet every time, your ears will be folded in the helmet, and you must use your hands to poke them before opening your ears, it means that you are wearing the helmet in a wrong way.
The specific operation methods are as follows: First, hold the fixing belts on both sides of the helmet with the thumbs and forefinger of both hands, and gently cover the helmet to the upper quarter of the head; Then, the key steps to determine whether you are wearing a helmet correctly appear. Generally speaking, we will continue to pull the strap down until the whole head enters the helmet, which is actually wrong. The correct method is: after the head initially enters the helmet, hold the front chin of the helmet with the remaining six fingers of both hands except the belt, and pull down the front of the helmet until the entire helmet is put on. This technique sounds ordinary, but it is absolutely easy to use. Try it and you will know; Later, lock the helmet strap. This is very critical. Not locking the helmet strap is just as dangerous as not wearing a helmet. When a car falls, the helmet is likely to come out of the rider's head, which cannot protect it as it should.
How to choose a suitable helmet? Helmets are divided into; Full helmet, 3/4 helmet, half helmet and cross-country helmet. The use is different, of course, the helmet is also different. Full helmet is a common helmet for racing, which covers the head completely, and has high protection, suitable for racing and some motorcycle trips; Helmets are generally protective and comfortable, suitable for retro riding or urban walking; Half helmet has poor protection, but it has good comfort and convenience, and is suitable for low-speed short distance urban transportation or retro vehicles; The off-road helmet has a unique and exaggerated shape. The sport of off-road does not pursue extreme speed, so the problem of wind resistance will not be considered too much when designing helmets. The long brim can block the sun, and the goggles can resist the flying sand and stone, so off-road helmets are suitable for pulling or pure off-road wear.
Uncover helmet: The mask part can be lifted to the top of the head for easy removal and daily use, such as smoking or drinking water. You can wear the helmet without removing glasses. At low speed, the helmet can be opened for ventilation, and closed for full helmet. Of course, compared with full helmet, the structural strength will certainly be affected, but the difference will not be too big. It is suitable for motorcycle riding.
Pull Helmet: This is a versatile helmet shape derived from the characteristics of the above helmets. It has practical functions and is commonly known as a pull helmet. Compared with full helmet, it has more jaw protection, brim, and wind resistance. Compared with the cross-country helmet, it has more lenses and is optimized for long-distance riding. Usually, the brim and lenses are detachable. It is suitable for pull cross-country riding.
According to the use, we know what type of helmet we need. Now let's take a look at the brand of helmet. A good brand helmet will provide more security.
