Bike helmet durability
A bike helmet is, above all, a piece of safety equipment. We seek to reduce its environmental impact, but we must preserve its protective features.
Unfortunately, bike helmets don't last forever. Over the years, through handling or impacts from branches, they gradually lose their shock absorption ability.
In general, a bike helmet will last 5 years if it has not undergone any violent impacts.
But any helmets that have been through a violent impact should be removed from use.