I just suffered my first big crash last weekend which was the last straw for me to go out and buy a neck roll. So I shelled ou the greenbacks for one the next day. I was just flipping through some old moto mags and saw what I call a neck roll referred to a collar bone donut. This is of interest to me because I broke my collarbone in the crash (yep, no riding for me until at least April). Though I doubt any device of man would have saved me in this impact, I was wondering if anyone could explain how a helmet donut could save your collarbone? I thought they just protected you from whiplash and over extending your neck.