bike helmet, bicycle helmet factory in China

The Pok Tyrone Ltd is A China Helmet Factory custom design / manufacturer / Wholesale Helmets,Horse Helmet,Sport Helmet,bicycle Helmet,Climbing Helmet  

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HOW DOES HELMET WORK

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Helmets: How they Work, and What Standards Do Summary: Here are some basic ideas on helmets including design principles and what they can or can't do for you. We also explain what is included in standards for helmet testing. Why use a  helmet ? Helmets are useful as safety gear to prevent injuries in an uncontrolled environment. If you can't prevent a crash or impact, but you know it will occur, a helmet can prevent or minimize injury to the head and brain. We can not emphasize enough that the first step in preventing injury is to minimize the probability of crashing or being impacted. Not hitting something hard is infinitely better than hitting with a helmet on! There are many reasons for that statement. No helmet can protect against all possible impacts, and the impact may exceed the helmet's protection. No helmet protects any part of the body that it does not cover, so even if the head injury is avoided you may have a smushed face, broken bones or worse. Safety a...
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Helmet Cooling System And Design

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BASICS Helmet  liners are made of foam that holds heat well. Human bodies use the head to radiate excess heat during exercise. Only a flow of air over the head can carry that heat out of the helmet, so ventilation becomes critical in hot weather, and is needed even in cold weather to carry moisture away. Back in the 1980’s a British university study found that the larger the front vents, the cooler the helmet. More recent research indicates that for optimal cooling the air also needs to be channeled to the exits, so the interior channels are important to taking in the most air possible through the front vents. In some designs air may even prematurely exit through the side or top vents before performing its cooling role, and researchers have covered some vents and actually improved cooling performance. Some air flows under the edges of the helmet if you have not sealed the edge against your head with fit pads. In short, the interaction of the vents and channels in directing th...
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HOW TO CHOOSE THE BEST CLIMBING HELMET

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HOW TO CHOOSE THE BEST CLIMBING HELMET WEAR-ABILITY What good does buying a  climbing helmet  do if you don’t wear it? Above all, pick a helmet that is comfortable and attractive in your eyes because if, on the other hand, you get an uncomfortable and unattractive helmet you will probably never wear it and it will do you no good.   PROTECTIVENESS Consider the type of climbing you’ll be doing. Are you at an increased risk of hitting your head or having something (e.g. rock, ice) fall onto your head? Or do you simply need a layer of cranium protection for the worst case scenario?   If your climbing helmet would be seeing lots of abuse then opt for a durable and more protective helmet. Otherwise, you might be able to get away with a lighter option.   Weight Weight can be an important criteria for gear selection depending on the type of climbing you’re doing. Those seeking to minimize climbing pack weight for whatever reason should look for...
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