A helmet is an important part of maintaining the head and cushioning the impact of riding a motorcycle.In addition, more than 75% of major motorcycle traffic accidents are head injuries caused by not wearing helmet or not wearing helmet properly.Helmet atmosphere full helmet and half helmet two major categories, half helmet is divided into 1/2 helmet and 3/4 helmet.One-half of the helmet body maintenance does not include the ear, that is, the wearing is the ear is exposed, 3/4 helmet body maintenance extends down the maintenance of the ear, the helmet can be divided into cross-country helmet (pull helmet), uncovered helmet and ordinary full helmet.The general full helmet can be applied to most riders, especially motorbike enthusiasts, because the general full helmet is more encircling.And the helmet is more suitable for long-distance motorcycle riders, because they can only lift the front part, so that they can drink water, smoke, chat, etc., without having to take off the whole helmet frequently.The off-road helmet is certainly suitable for off-road riders, as it has an extended muzzle to better maintain the rider's face and mouth.Half helmet is only suitable for riding a small platoon, or slow speed of the cruise motorcycle.Helmets are made of carbon fiber, fiberglass, organic plastic and, rarely, small steel helmets.Carbon fiber, which combines comfort, lightness and safety, is expensive, but many riders buy and wear it.Too large a helmet is risky for rider riding, and it's important to wear a safety cord no matter what type of helmet you wear.

　　Helmet liner is refers to the internal buffer layer, the main function is to absorb the impact of the external impact, if there is no buffer layer hard helmet shell, when faced with external shocks, the impact through the hard shell direct action to do the head, head is hurt, so, lined with buffer layer material quality determines the buffering capacity of the helmet.Generally, EPS (buffering polystyrene dragon) plastic foam is used as the inner buffer layer. While buffe

　　Helmet liner is generally for foam plastic nylon liner, has the very good effect of vibration absorber, and some high quality helmet also will use the leather material (leather have good softness and fire), whether by foam pad, sponge liner, liner, or leather, main purpose is to provide more soft and submissive tactility, and with sweat absorption and fast drying, antibacterial, breathable and removable cleaning features, helmet, of course, the more air holes, feel more breathable, cool when wearing.

　　Helmet buckle and helmet belt accessories (safety harness) are mainly used to fix the helmet position. The helmet strap is fixed below the two ears and the buckle is fixed on the Adam's apple.The knob can adjust the tightness of helmet wearing according to different head size of each person.Some higher-end helmets come with a variety of add-on convenience devices, such as vent devices, face shields, ear protectors and intercom devices