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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You're halfway up a multi-pitch route when the sun dips below the horizon faster than expected. Suddenly, finding your next hold becomes a challenge. This is where a headlamp attached to your climbing helmet becomes essential—it keeps your hands free while illuminating the path ahead.
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Your climbing helmet has been with you through countless adventures. It's protected you from falling debris, bumped against rock faces, and sat in your gear bag through scorching summers and freezing winters. But here's a question many climbers overlook: when should you retire it?
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