Helmet warning

[jtopiso_imp]

Makes me wonder. Surely, if all that’s disintegrating is the lining, it could be replaced? Or is there disintegration in the harder structural material?

That was my first thought but I doubt there would be much saving against a new helmet if it was even possible to obtain a new lining.

Also what came to mind was how some plastic goes very brittle with age, not the same material as helmets but buckets seem to split and crack quite quickly even if not used.

That was my first thought but I doubt there would be much saving against a new helmet if it was even possible to obtain a new lining.

Also what came to mind was how some plastic goes very brittle with age, not the same material as helmets but buckets seem to split and crack quite quickly even if not used.
Not only that, but also that for helmets, the answer will probably be "nobody knows" (except of whatever says the manufacturer of material's life expectancy)

As far as I know, old helmets are not tested, so they are not certified. Also, there are different technologies and materials used on different helmets, so there is no general answer: How fast or slow the shell will degenerate is an unknown.