General information
Choosing and purchasing a helmet
When you purchase a helmet, the most important moment is choosing the right size. If you have never
purchased a helmet, you probably don’t know your own size. The size of a helmet is specified by the inner
circumference of the internal padding. The size number therefore corresponds to the head circumference
in centimetres.
Take your time when choosing a helmet. Try several, and follow these criteria:
Put the helmet on and fasten the strap:
• The helmet should not be so loose that it moves around, but neither so tight that you can feel a
continuous pressure on your head
• A helmet that is too large may slide down and obstruct your eyes
• Try to pull it off, moving it back and forth: if it tends to slip off or move around, it is too large
• Lean your head forwards, grip the helmet’s rear edge, and try to pull the helmet off. If the helmet
slides off, it is not suitable for the shape of your head.
• For TZ, the polycarbonate outer shell is accompanied by padding available in four versions, for
sizes Small (54-56 cm), Medium (57-59 cm), Large (60 cm) and Extra Large (61 cm). Fit can be
further adjusted using the optional wheel regulator.
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