Electric vehicle helmet It is made of glass fiber reinforced plastic. It is a relatively solid material with long service life. It can be used for 2-3 years if it is used carefully and without bumping. It can also be said that this is a more appropriate time.  

Some can be used after such a long time., Since they are carefully kept at ordinary times, there is no major problem.

If you want to continue using, However, it is not recommended to continue to use the helmet at this time, and fiberglass may also age. If there are scratches in the middle, it may not take so long.