UFO Plast DIAMOND Mode D'emploi page 22

Latching system: Diamond helmets are equipped with a
chin-strap closing system with double D closure in anodised
aluminium with 25 mm tubular band complete with magnetic
hooking closing button. The closing band also offers
comfortable, adjustable length padding. Fasten the chinstrap
under your chin by threading the strap through the double "D"
rings as shown in the illustration (Fig. 3). The strap should not
be too tight, normally the tension is correct when you can fit
one finger between the strap and your chin.
Fig. 3 Doube "D" fastening system
Magnetic closing!
1) 2) 3) 4)
Involuntary loss of helmet Fig. 4 Try to take the helmet off
(Fig. 4): Put on the helmet and
fasten the chinstrap correctly.
Now try to take the helmet off
without unfastening it by rotating
it forward. If you have chosen
the right size and fastened the
helmet correctly it will not budge
from it's correct position.
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