Are they replace every crash, like adult ones?
DS (7) had a pretty good crash a few days ago, scraped up one side of his body with some nice bruises. I didn't see the crash, and he said he didn't hit his head. But yesterday I noticed a big scrape on his helmet, so I think he did hit it.
He has a nice helmet (Specialized Flash, 40$) and this could get expensive given the frequency of his speed-demon behaviour. But obviously his brain is worth it, I just wasn't sure if the guidelines for kids were the same.
We had good luck finding a deal on rei-outlet for DD's helmet, but are there any other good places to look?