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Plastic helmets are very hard plastic products that are worn on head to protect it from high energy mechanical blows or impacts. The history of helmets can be traced back to ancient ages when helmets were one of the most commonly used fight equipments in wars. The plastic helmets are widely preferred over metal helmets because of their high strength to weight ratio, lower cost, high break resistance and longer life.
The shape, size and designs of plastic helmets vary greatly according to the purpose of their usage. For example, the helmets designed for motorcyclists needs to be ventilated and that which are designed for miners and rock climbers needs to be lightweight. The plastic helmets are most commonly used in military, mining, construction and driving. The plastic helmets are also used in some sports like cricket, baseball, formula one races, rock climbing and in hokey and football by goal keepers.
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