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maritime DC & PPE Information Center
personnel protection

FFH Tip 004
Instructions for Providing a Comfortable and Secure Fit (Rev 120911)


To size the ratchet headband:

1.      Turn the ratchet knob counterclockwise until headband is at largest size (see Figure 1).

2.      Place the helmet on your head and turn ratchet knob clockwise until headband is snug and comfortable.

To adjust helmet vertically:

1.      Locate the vertical adjustment tabs at the front and back of the headband. There are four tabs on the headband and four white posts on the inner liner (see

 Figure 2).

2.      To raise or lower the headband, reposition the tabs on the white posts and snap in place.