So let's say that I just got my first bike. How do I know what helmet to get? I keep hear Shoei is the best, why? As long as it's DOT approved, is it safe? Do I need a full face, 3/4, or half? Also, is fitting for one the same as fitting for a bicycle or skateboard helmet? Please give me your best asvise so that I and others can be safe while learning. Thanks!