When my friend read through it he “yeah this looks great. But check out the ‘crash’ features.It’s got say if it’s a ‘ multiple or single impact helmet.’ So, use multiple impact helmets that can standup to several falls.
Whatever you do don’t buy used helmets as you have no idea of how many crashes,bumps and knocks the helmet has been subject too.
Check out the life span of the helmet.Helmets wear out just through the exposure uv rays and the weather.
Steeper Than It Looks