**Snell Approved Racing Helmet's - SA2010 vs M2010**

What everybody is saying is correct. The only difference between a SA and M helmet is that the SA has interior padding made of Nomex for extra fire retardancy.

As far as the quality of the helmets, it is kind of like you always hear famous TV contractor Mike Holmes talk about "minimum code" when building a house. "Minimum code" is not necessarily the best quality. In this case, the "minimum code" of just passing the Snell testing on a couple of sample helmets is not necessarily the best quality for protecting your noggin.

IMHO, stick with a name brand, Simpson, Bell, etc. I am sure there are fake Snell stickers out there on Chinese junk too! #-o