The integrated size-adjusting system can be adjusted
using a turning knob at the back of one’s head:
smaller = twist clockwise bigger = twist anti-clockwise
• Open the strap divider (Fig. 3a)
• The strap divider must be positioned in such a way, that the straps
are taut but comfortable. The strap divider must be below the ear,
and the straps must not cover the ears.
• Close the strap divider (Fig. 3b)
Fig. 3a Fig. 3b
Fig. 2
+
_
• The chin strap has been adjusted correctly if you feel slight
pressure when you open your mouth.
• If the chin strap is too loose it must be pulled tight using the
winding on the fastener. (Fig. 4a)
• If the chin strap is too tight it must be loosened also using the
winding on the fastener. (Fig. 4a)
Press
Press
Fig. 4b
Fig. 4a
Fastener
Winding
Chin Strap
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