Day 5 – Do helmets expire?
Here are a few more tips you may not have considered for properly fitting a helmet.
Oh, and yes helmets do expire. The protective materials inside them degrade over time (approximately 5 years). They will degrade faster if left in hot cars… so it is best to store your helmet in a climate controlled environment.
Check out this article: http://www.equineguelph.ca/news/index.php?content=416