Check these out, pretty cool helmets. The most expensive, but really cool.
http://www.6dhelmets.com/
http://motocrossactionmag.com/Main/News/360b599e-7916-46e3-abe5-aa583aea89b1.aspx
http://www.6dhelmets.com/
http://motocrossactionmag.com/Main/News/360b599e-7916-46e3-abe5-aa583aea89b1.aspx