https://www.secumar.com/en/servicing/
For bike helmets, independent safety labs have actually done the science and found no measurable deterioration in impact testing nor material properties with helmets as much as 26 years old. (Link to journal paper at end of summary linked below.)
https://helmets.org/up1505a.htm
https://www.secumar.com/en/servicing/
For bike helmets, independent safety labs have actually done the science and found no measurable deterioration in impact testing nor material properties with helmets as much as 26 years old. (Link to journal paper at end of summary linked below.)
https://helmets.org/up1505a.htm