Okay, I promissed my wife that I would never race without a Helmet. That being said, I need to find a good quality helmet that meets the NHRA tech inspection standards. I understand that there is a SNELL rating. However, I have no idea what "SNELL" is, or how they rate helmets. Got any suggestions?

I've got a big head about a size 7 3/4 or 8 for a fitted hat. How do I measure myself? Do I just order a "XL" size and hope for the best?
I'd also love to hear your comments and feedback about particular brands or styles. I've never been a motorcyclist, or an ATV guy, so I've never really wore a helmet before. When I raced for the first time in Las Vegas, I went to Wal-Mart, bought the highest priced helmet they had, and returned it when I was done.

(Hey, a teacher's gotta do, what a teacher's gotta do!

) It wasn't a SNELL rated helmet, and my car is an 18 second daily driver, so I felt safe.
Talk to me, Let me here ya holla back at me, yada... yada...

Scott Faivre
(Today is my last day before the Christmas break with the kids. They are WIRED! Please forgive my squirelliness!

)