Generally speaking, the primary way to fit your helmet size is to measure your head circumference.The method is also very simple: use a tape measure around the wider part of the ear, the measurement of the circumference, the specific number of circumference is your head circumference, generally in centimeters as the unit;Once you've got the headband, you can check the official size chart from the helmet manufacturer to determine your helmet size.Take the helmet of Arai for example, a helmet of size M is required for a head circumference of 57cm-58cm.It's important to note that every helmet manufacturer has a different size standard. Make sure you're following the size chart of the manufacturer you're buying the helmet from, as there may be differences between manufacturers that can cause you to buy the wrong number.

    However, the accuracy of the size table is relatively limited, and the test is a more accurate way to determine the appropriate helmet.It's important and easy to overlook that the correct way to wear a helmet is to apply it from front to back, rather than slapping it on roughly.If you find yourself wearing your helmet every time, your ears are folded inside the helmet and you have to play with your hands before you can spread them out, it means that you are wearing the helmet in the wrong way.

    The specific operation methods are as follows: first, hold the fixed straps on both sides of the helmet with the thumb and forefinger of both hands, and cover the helmet lightly to the top quarter of the head;Then came the crucial step of deciding whether you were wearing the helmet correctly.Usually, we continue to pull the strap down until the entire head is inside the helmet, which is wrong.The correct technique is: after the head enters the helmet, use both hands to grab the remaining six fingers except the strap, hold the front jaw of the helmet, grasp the front of the helmet and pull down until the whole helmet is put on.It sounds obvious, but it works. Just try it.Later, lock the helmet and secure the strap.This is critical. Leaving the helmet strap unlocked is just as dangerous as not wearing it, and the helmet is likely to fall off the rider's head and not provide the protection it is supposed to.

    How to choose a suitable helmet?Helmets are divided into;Full helmet, 3/4 helmet and half helmet, and off-road helmet.Different USES of course, the choice of helmet is not the same, the full helmet is a common racing helmet, covering the head, has a high protective suitable for racing and part of the motorcycle brigade;The helmet is general in protection and comfort, suitable for retro cycling or urban walking.The half helmet is less protective, but it has better comfort and convenience, suitable for low-speed, short-distance urban transportation or vintage models to wear;The off-road helmet is unique and exaggerated.Cross-country is not about speed, so the helmet is not designed with a lot of wind resistance. The long brim can block the sun, and the goggles can block the flying sand, so the helmet is suitable for tension or pure cross-country wear.

    Uncovered helmet: the mask part can be lifted to the top of the head to facilitate wearing and daily use, such as smoking or drinking water, you don't need to take off your glasses when wearing the helmet.At low speeds, it is raised to allow air to escape, while the full helmet is closed.Of course, the structural strength of the helmet will be affected, but the difference is not too big.Suitable for motorcycle riding.

    Tension helmet: this is a versatile helmet with practical functions derived from the characteristics of the above several helmets, commonly known as tension helmet.Compared to the full helmet more jaw protection, brim, also more wind resistance shortcomings.The brim and lenses are usually detachable, as opposed to the off-road helmet, and are optimized for long rides.Suitable for pulling cross-country cycling.

    We know what kind of helmet we need according to the purpose. Now let's take a look at the brand of helmet.A good brand of helmet will have a safer guarantee.