English 
Usually, the shell of the helmet is made of high-strength materials, such as metal, engineering plastics, Kevlar fiber, etc., through its deformation to absorb most of the impact; the lining material has the ability to absorb sweat, keep warm, and absorb shock. Military helmets often have the functi
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Rock climbing is an activity that demands focus, strength, and the right equipment. While ropes, harnesses, and shoes often get most of the attention, there's one piece of gear that protects your most valuable asset: the climbing helmet. A good helmet is a non-negotiable part of your kit, whether you're scaling a towering cliff face or learning the ropes at a local crag.
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Learning to ride a bike is a classic childhood milestone, marked by wobbles, scraped knees, and the eventual thrill of freedom. But as a parent, your primary concern is safety. You might find yourself wondering about the rules of the road, especially one crucial piece of equipment: the bike helmet. Are helmets for kids just a strong suggestion, or are they legally required?
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