Remember the 4S' R esearch shows most of the cycling fatalities are attributed to head injuries. In a severe accident, your skull may be fractured and your brain may be torn by penetrating objects and bone fragments.
Brain injuries can also occur by violent impacts that leave the skull undamaged.
To protect yourself against those head injuries, Snell Memorial Foundation urges you to wear a helmet when you are riding. S ize, Strap, Straight and S nell. The best way to gauge comfort level and fit is through comparison. The helmet should fit comfortably all the way around your head. Additional pads can be used to make it snug.