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Protection materials and technologies

Headband smooth adjustment

Modern helmets allow for exact adjusting the headband diameter with minimum efforts by using rotation mechanism (ratchet) or headband strap lock.

Smooth adjustment is carried out by means of a ratchet, whose turning adjusts the headband diameter to the desired size. Helmet headband adjustment can be also done by means of a headband strap lock.

  1. Open the lock. Hold down the lock with your thumb and forefinger so that the fixing strap moves freely in the lock.
  2. Uncover the headband. Move the fixing strap to the last notch so that the free end of the strap is left.
  3. Adjust to the head size. Put on the helmet and tighten the fixing strap to the head size.
  4. No adjustment is required next time .