HJC CS-R1 Owner's Manual page 22

r'Helmet Replacement
Helmet Disposal
AWARNING If you buy a new helmet, destroy the old one to ensure it cannot be reused.
Do not sell or give away your old helmet, even if it has not been damaged.
Over time the protective foam in the helmet will adjust to the contours of your
head. If someone else uses this helmet it will not provide them with
as much protection.
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