It's rather more complicated, agar. If it interests you, read this thread, although it's got quite long by now (helmet debates repeat over and over, with only slight variations, to the extent that even I can't really be bothered having them again and again, although I do my best). http://cyclehelmets.org/ is worth reading.
It's rather more complicated, agar. If it interests you, read this thread, although it's got quite long by now (helmet debates repeat over and over, with only slight variations, to the extent that even I can't really be bothered having them again and again, although I do my best). http://cyclehelmets.org/ is worth reading.