A current snowboard helmet can be a great way to protect your melon, but there is a lot that you should know about sizing and maintaining a styley new lid.
First off, it is important to understand how the current generation of snowboard helmets works. They are not designed to deflect hard impact and then rebound (a common misconception), but rather to absorb hard impact by allowing the crushing (and permanent destruction) of the stiff protective foam that makes up the helmet's primary structure. The idea is that the foam is damaged but the head is not. I mention this first, because understanding that this damage to the helmet is the very thing that will protect your head is integral to all of the points that will follow.