Originally Posted by Patriot

Yes, the foam does provide a little bit of impact absorption, and does help prevent some blunt trauma, but it is nowhere near as effective as say, a motorcycle helmet, a football helmet, or a kevlar Army helmet.

The simple way to prove my point, is get yourself a hammer.

Now, smack yourself in the head with it while wearing a cycling helmet. Not too hard, but enough so you really feel it.

Now, take off your helmet and do it gain.

Let me know how much it hurts if/when you wake up.